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AMPLIFICATORI INTEGRATI
 
CONRAD JOHNSON
CA150
LISTINO UFFICIALE €.
7.940,00
Per offerta e promozioni Telefona /e -mail
Amplificatore Integrato stato solido a Mosfet
da 135W per canale. Il CA150 combina la circuiteria dell'amplificatore di
potenza MF2275 e un controllo divolume che utilizza un Burr-Brown sulla
preamplificazione, eliminando lanecessità (e le distorsioni e le perdite) create
dai cavi di interconnessione trapreamplificatore e amplificatore. Con il pieno
controllo remoto di tutte le funzioni e 7 ingressi di linea, il CA150 offre
tutta la flessibilità di un preamplificatore separato e con una potenza nominale
di 135 watt /canale, il CA150 è in grado di pilotare la maggior parte dei
sistemi di altoparlanti. Caratteristiche: Potenza: 135 watts Watt per canale da
20 Hz a 20 kHz a non più del 1% THD, entrambi i canali su 8 Ohm; sensibilità:
2.0V a potenza nominale; Risposta in frequenza (a 10 Watt): 20 Hz a 20 kHz, +/-
.5 dB; Ronzio e rumore: 100 dB sotto potenza nominale; Impedenza di ingresso:
10k Ohms; dimensioni: (P x L x A) 37,1 x 48,3 x 11,4; Peso netto: 15 Kg
CA150 Solid State Control Amplifier The CA150
control amplifier represents a distinctly different approach to high-performance
home audio. In many ways it is the ultimate embodiment of our corporate design
philosophy that simple circuits yield best results. Similar in function to an
integrated amplifier, a control amplifier offers the significant potential
improvement of eliminating extra connections, external cabling, and inter-device
connection considerations that limit conventional audio systems. But the control
amplifier also eliminates an entire stage of audio circuitry (the line stage)
and its inherent colorations. The CA150 audio circuit is similar to our highly
regarded MF2550 and MF2275 power amplifiers, with FET voltage gain circuit for
tube-like transfer function and a high-current bi-polar output stage to achieve
a high damping factor with limited negative feedback. The CA150 adds a
sophisticated level control circuit that allows for precisely repeatable level
and balance settings made in 1.0 dB increments. Most integrated amplifiers not
only forgo the advantage of eliminating redundant circuits, but also are
cheapened by stripping out features and sacrificing parts quality to offer a low
cost entry into a prestigious brand, thereby failing to achieve even the
performance gains that could be afforded by integrating preamp and amp into a
single package. By contrast, the CA150 is a full featured control unit with
seven line-level inputs including a theater loop, and its circuits incorporate
the kind of top quality parts for which conrad-johnson is known. All resistors
in the audio circuits and related power supplies are precision metal film types.
With the exception of the large power supply reservoir capacitors (which are
specially chosen electrolytic capacitors bypassed by polypropylenes), all
capacitors in these circuits use polystyrene and polypropylene dielectrics. The
over-sized power transformer would not seem out of place in an amplifier with
much higher power rating. Even the machined gold-plated connectors have been
selected for their sonic-excellence. The use of carefully selected, high-quality
parts enables the CA150 to properly exploit the dramatic potential of a control
amplifier to enhance the immediacy of musical experience afforded by fine
recordings. As a result, the CA150 is notable for its resolution of subtle
dynamic shadings and palpable imaging, for a natural harmonic tonality, and
extraordinary resolution. Those who wish to take the experience a step further
will want to investigate the upgraded CA150SE, which benefits from a massive
dose of CJD Teflon Capacitors and ultra high-performance metal foil resistors.
Either model is sure to rekindle your passion for enjoying great music in your
home Specifications Power 135 watts per channel RMS both channels
driven into 8 ohms from 20Hz to 20KHz at no more than 1% total harmonic
distortion or intermodulation distortion. Small Signal Distortion less than .1%
at mid-band Frequency Response (at 10 watts) 20 Hz to 20 kHz, +/- .5 dB Hum and
Noise 100 dB below rated power Input Impedance 10k Ohms Phase speaker output is
phase correct, sub-woofer output is phase correct Dimensions 14.625″D x 19″W x
4.5″H Weight 33 lbs.
CONRAD JOHNSON
CA150SE
LISTINO UFFICIALE €.
11.110,00
Per offerta e promozioni Telefona /e -mail
Amplificatore
Integrato stato solido a Mosfet da 135W per canale Special Edition.
Caratteristiche: Potenza: 135 watts Watt per canale da 20 Hz a 20 kHz a non più
del 1% THD, entrambi i canali su 8 Ohm; sensibilità: 2.0V a potenza nominale;
Risposta in frequenza (a 10 Watt): 20 Hz a 20 kHz, +/- .5 dB; Ronzio e rumore:
100 dB sotto potenza nominale; Impedenza di ingresso: 10k Ohms; dimensioni: (P x
L x A) 37,1 x 48,3 x 11,4; Peso netto: 15 Kg
CA150 Solid State Control Amplifier The CA150
control amplifier represents a distinctly different approach to high-performance
home audio. In many ways it is the ultimate embodiment of our corporate design
philosophy that simple circuits yield best results. Similar in function to an
integrated amplifier, a control amplifier offers the significant potential
improvement of eliminating extra connections, external cabling, and inter-device
connection considerations that limit conventional audio systems. But the control
amplifier also eliminates an entire stage of audio circuitry (the line stage)
and its inherent colorations. The CA150 audio circuit is similar to our highly
regarded MF2550 and MF2275 power amplifiers, with FET voltage gain circuit for
tube-like transfer function and a high-current bi-polar output stage to achieve
a high damping factor with limited negative feedback. The CA150 adds a
sophisticated level control circuit that allows for precisely repeatable level
and balance settings made in 1.0 dB increments. Most integrated amplifiers not
only forgo the advantage of eliminating redundant circuits, but also are
cheapened by stripping out features and sacrificing parts quality to offer a low
cost entry into a prestigious brand, thereby failing to achieve even the
performance gains that could be afforded by integrating preamp and amp into a
single package. By contrast, the CA150 is a full featured control unit with
seven line-level inputs including a theater loop, and its circuits incorporate
the kind of top quality parts for which conrad-johnson is known. All resistors
in the audio circuits and related power supplies are precision metal film types.
With the exception of the large power supply reservoir capacitors (which are
specially chosen electrolytic capacitors bypassed by polypropylenes), all
capacitors in these circuits use polystyrene and polypropylene dielectrics. The
over-sized power transformer would not seem out of place in an amplifier with
much higher power rating. Even the machined gold-plated connectors have been
selected for their sonic-excellence. The use of carefully selected, high-quality
parts enables the CA150 to properly exploit the dramatic potential of a control
amplifier to enhance the immediacy of musical experience afforded by fine
recordings. As a result, the CA150 is notable for its resolution of subtle
dynamic shadings and palpable imaging, for a natural harmonic tonality, and
extraordinary resolution. Those who wish to take the experience a step further
will want to investigate the upgraded CA150SE, which benefits from a massive
dose of CJD Teflon Capacitors and ultra high-performance metal foil resistors.
Either model is sure to rekindle your passion for enjoying great music in your
home Specifications Power 135 watts per channel RMS both channels
driven into 8 ohms from 20Hz to 20KHz at no more than 1% total harmonic
distortion or intermodulation distortion. Small Signal Distortion less than .1%
at mid-band Frequency Response (at 10 watts) 20 Hz to 20 kHz, +/- .5 dB Hum and
Noise 100 dB below rated power Input Impedance 10k Ohms Phase speaker output is
phase correct, sub-woofer output is phase correct Dimensions 14.625″D x 19″W x
4.5″H Weight 33 lbs.
PREAMPLIFICATORI
CONRAD JOHNSON
CLASSIC 2
LISTINO UFFICIALE €. 3.740,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
a valvole solo Linea S/telecomando. Caratteristiche: Guadagno: 27 dB; Potenza
massima: 9,5 VRMS; Distorsione: meno di 0,15% THD; Banda passante: 2 Hz a più di
100 KHz; Ronzio e rumore: -98 dB rispetto a 2,5 V in uscita; Valvole: 1 x 6922;
Dimensioni: (P x L x A) 34,6 x 48,3 x 9,2 cm; Peso: 6,4 KgVERSIONE
CLASSIC 2 con Phono Preamplificatore a valvole con Phono S/telecomando.
Caratteristiche: Guadagno: 27 dB; Potenza massima: 9,5 VRMS; Distorsione: meno
di 0,15% THD; Banda passante: 2 Hz a più di 100 KHz; Ronzio e rumore: -98 dB
rispetto a 2,5 V in uscita; Valvole: 1 x 6922; Phono Stage Opzionale: Guadagno:
•Versione Alto Guadagno 54 dB •Versione Basso Guadagno 40 dB; equalizzazione:
entro +/- 0,25 dB standard RIAA; Ronzio e rumore: 80 dB rispetto a 10 mV;
Valvole: •Versione Alto Guadagno 3x 12AX7 •Versione Basso Guadagno 2x 12AX7, 1x
12AU7; Dimensioni: (P x L x A) 34,6 x 48,3 x 9,2 cm 4.920,00 euro
Classic-2
Vacuum-Tube Preamplifier For more than thirty years, conrad-johnson has refined
the concept of high end audio through its relentless pursuit of excellence. For
as long as the company has been producing its world-renowned state of the art
audio instruments, it has also been adapting the technologies and construction
techniques responsible for those products and applying them to more affordable
components designed for the music-lover who requires musically satisfying
performance but whose budget does not encompass the loftiest of current
offerings. The conrad-johnson Classic-2 vacuum-tube preamplifier honors this
thirty-year heritage of musically accurate, moderately priced preamplifiers
which have displayed the conrad-johnson name. The Classic-2 faithfully
reproduces the harmonic structure of complex musical passages, preserving the
distinctive tonal character of each instrument and voice. The space of the sound
stage and the ambience of the concert hall are conveyed in realistic, three
dimensional perspective. Individual instruments are precisely located within
that three dimensional space. Musical transients are reproduced naturally, with
realistic impact, but without the artificial enhancement which characterizes so
many “hi-fi” components. Never imposing its own distractions, the Classic-2
invites the listener to enjoy the musical performance. The Classic-2
preamplifier is available as either a line-stage, or with an optional phono
stage. Both stages are zero-feedback circuits. The phono section uses two triode
amplifiers separated by a passive RIAA equalization network. The second triode
amplifier is direct coupled to a high-current output stage. The line-level
section has a single triode amplifier also direct coupled to a high-current
output stage. These output buffer stages minimize the output impedance, making
the Classic-2 compatible with nearly all installations, including those
requiring long lengths of interconnect cable. DC plate voltages are supplied by
a very low impedance discrete regulator, designed to prevent the power supply
from imposing its own colorations on the audio signal. A regulated filament
supply further isolates the unit from ac line voltage fluctuations Premium
quality component parts are specified for the Classic-2 to assure full
realization of the potential performance of the circuit designs and to
dependably sustain that performance for years to come. Precision, metal-film
resistors yield low noise performance for greatest clarity. Polypropylene and
polystyrene capacitors, used exclusively in both the audio circuits and the
regulated plate voltage supplies, offer maximum temporal accuracy. Phono
equalization in the Classic-2 is accomplished with 1% tolerance precision parts
to assure tonal neutrality. Industrial quality controls offer extended life and
maintain a crisp, precise feel. The Classic-2 offers an excellent, low-cost
introduction to the joys of modern tube preamplifiers. For those who wish to
take the experience a step further we offer the upgraded Classic 2SE, which
incorporates CJD Teflon Capacitors and ultra high-performance metal foil
resistors in strategic applications in the circuit. Either model is sure to
enhance your enjoyment of playing back great music recordings in your home.Classic-2
Preamplifier Specifications Gain: 27 db Maximum output: 9.5 Vrms Distortion:
less than .15% THD Bandpass: 2 Hz to more than 100 KHz Hum and Noise: -98 dB
relative to 2.5 V output Tube complement: 1 x 6922 Optional Phono Stage
Gain: High Gain 54 dB, Low Gain 40 dB Phono Equalization: within +/- .25 dB of
RIAA standard Hum and Noise: Phono Stage 80 dB relative to 10 mV input Tube
Complement: 3x 12AX7 for High Gain, 2x 12AX7, 1x 12AU7 for Low Gain Dimensions
13.625D x 19W x 3.625H inches Weight 14 lbs. net 3-Year Warranty All
conrad-johnson products are carefully hand assembled and each is thoroughly
tested to assure conformity to our exacting performance standards. The owner is
protected by our three year limited warranty covering labor and parts except
vacuum-tubes. Service is a top priority at conrad-johnson. In the event that a
product does require service, it will be handled promptly and efficiently.
 
CONRAD JOHNSON
ET3
LISTINO
UFFICIALE €. 4.680,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
a valvole solo Linea. Caratteristiche: Guadagno: 25 dB; Potenza massima: 20 Vrms;
Distorsione: meno di 0,15% THD; Impedenza: 100 Ohm; Freq. Risposta: 2 Hz a più
di 100 KHz; Ronzio e rumore: 98 dB al di sotto di 2,5 V; Valvole: 1x 6922;
Dimensioni: (P x L x A) 33,3 x 48,3 x 8,4 cm; Peso: 5,9 Kg.VERSIONE
ET3 con Phono Preamplificatore a valvole con Phono. Caratteristiche: Guadagno:
25 dB Potenza massima: 20 Vrms; Distorsione: meno di 0,15% THD; Impedenza: 100
Ohm; Freq. Risposta: 2 Hz a più di 100 KHz; Ronzio e rumore: 98 dB al di sottodi
2,5 V; Valvole: 1x 6922; Phono Stage opzionale: Guadagno: •Versione AltoGuadagno
54dB, •Versione Basso Guadagno 40dB; Equalizzazione RIAA: +/- 0,25 db 20Hz a
20kHz; Ronzio e rumore: -80dB rispetto all'ingresso 10mV; Valvole: •Versione
Alto Guadagno 3x 12AX7 •Versione Basso Guadagno 2x 12AX7, 1x 12AU7; Dimensioni:
(P x L x A) 33,3 x 48,3 x 8,4 cm 6.040,00 euro
ET3/ET3SE Vacuum Tube Preamplifiers At
conrad-johnson, development of our flagship products has traditionally led to
important enhancements of our entry-level offerings. The ET3 preamplifier is a
case in point. The ET3 line-stage is a “baby” version of our flagship line-stage
preamplifier, the GAT. The family resemblance is much more than skin deep. With
voltage gain provided by a triode vacuum-tube, the zero-feedback line-stage
circuit of the ET3, along with its DC voltage regulators, closely replicates the
circuit of the GAT. Finally, and especially noteworthy, the ET3 features a relay
operated discrete stepped attenuator level-control circuit of the type found in
the GAT and CT5, absent only the balance control function found in those more
costly models. Functionally, the ET3 provides highly flexible I/O facilities
with six separate line-level inputs (including one “tape” loop), plus a theater
loop that facilitates use in a home theater system. In addition, the ET3 offers
the convenience of infrared remote control of all functions. For vinyl
enthusiasts, the ET3 is optionally available with a vacuum-tube phono stage that
borrows its zero-feedback audio circuit from our reference quality TEA1 phono
stage. Customers can choose between high gain (recommended for cartridges with a
rated output of 1.0 mV or less) and low gain (recommended for cartridges with
rated output greater than 1.0 mV) versions of the phono stage. Input resistive
loading is switch selectable over a range from 47 kOhms down to 200 Ohms. The
ET3 phono stage is built to the same high quality standard found in the ET3
line-stage. Premium quality component parts are specified to optimize
performance and to sustain that performance for years to come. Precision,
metal-film resistors yield low noise performance for greatest clarity.
Polypropylene capacitors, used exclusively in the audio circuits and the
regulated plate voltage supplies, offer extraordinary temporal accuracy. In fact,
the ET3 is built to standards that meet or exceed those of many companies’
“flagship” offerings. Those who wish to take the performance to yet a higher
level will be thrilled by the availability of an upgraded “SE” version. The
ET3SE boasts CJD Teflon capacitors in critical circuit applications, dozens of
upgraded metal foil resistors (including ALL resistors in the stepped attenuator
level control), upgraded machined input/output connectors, and even an upgrade
AC mains line-cord. It would be fair to say that the only thing “entry-level”
about the ET3 is its price. Arrange to audition one at a conrad-johnson dealer
to find out for yourself – you’ll be surprised at just how affordable true high-end
performance can be. ET3/ET3SE Preamplifier
Specifications Gain: 25 db Maximum output: 20 Vrms Output impedance: 100 ohms
Distortion:less than .15% THD at 1.0 Vrms output Frequency response: at unity
gain 2 Hz to more than 100Khz Hum and noise: 98 db below 2.5 v Tube complement:
1 x 6922 ET3 Optional Phono Stage High Gain Version 54dB Low Gain Version 40dB
RIAA Equalization: +/- .25 db 20Hz to 20kHz Hum and Noise: -80dB relative to
10mV input Phase: phase correct Tube Compliment: High Gain Version 3x 12AX7 Low
Gain Version 2x 12AX7, 1x 12AU7 Dimensions 13.125D x 19W x 3.315H inches Total
Weight 13 lbs.
CONRAD JOHNSON
ET3
se
LISTINO UFFICIALE €.
7.180,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
Lineaa a valvole Edizione Speciale. Caratteristiche: Guadagno: 25 dB; Potenza
massima: 20 Vrms; Distorsione: meno di 0,15% THD; Impedenza:100 Ohm; Freq.
Risposta: 2 Hz a più di 100 KHz; Ronzio e rumore: 98 dB al di sotto di 2,5 V;
Valvole: 1x 6922; Dimensioni: (P x L x A) 33,3 x 48,3 x 8,4 cm; Peso: 5,9 Kg.VERSIONE
ET3SE con Phono Preamplificatore con Phono a valvole Edizione Speciale.
Caratteristiche:Guadagno: 25 dB; Potenza massima: 20 Vrms; Distorsione: meno di
0,15% THD; Impedenza: 100 Ohm; Freq. Risposta: 2 Hz a più di 100 KHz; Ronzio e
rumore:98 dB al di sotto di 2,5 V; Valvole: 1x 6922; Phono Stage opzionale:
Guadagno:•Versione Alto Guadagno 54dB, •Versione Basso Guadagno 40dB;
Equalizzazione RIAA: +/- 0,25 db 20Hz a 20kHz; Ronzio e rumore: -80dB rispetto
all'ingresso 10mV; Valvole: •Versione Alto Guadagno 3x 12AX7 •Versione Basso
Guadagno 2x 12AX7, 1x 12AU7; Dimensioni: (P x L x A) 33,3x 48,3 x 8,4 cm
9.460,00 euro
ET3/ET3SE Vacuum Tube Preamplifiers At
conrad-johnson, development of our flagship products has traditionally led to
important enhancements of our entry-level offerings. The ET3 preamplifier is a
case in point. The ET3 line-stage is a “baby” version of our flagship line-stage
preamplifier, the GAT. The family resemblance is much more than skin deep. With
voltage gain provided by a triode vacuum-tube, the zero-feedback line-stage
circuit of the ET3, along with its DC voltage regulators, closely replicates the
circuit of the GAT. Finally, and especially noteworthy, the ET3 features a relay
operated discrete stepped attenuator level-control circuit of the type found in
the GAT and CT5, absent only the balance control function found in those more
costly models. Functionally, the ET3 provides highly flexible I/O facilities
with six separate line-level inputs (including one “tape” loop), plus a theater
loop that facilitates use in a home theater system. In addition, the ET3 offers
the convenience of infrared remote control of all functions. For vinyl
enthusiasts, the ET3 is optionally available with a vacuum-tube phono stage that
borrows its zero-feedback audio circuit from our reference quality TEA1 phono
stage. Customers can choose between high gain (recommended for cartridges with a
rated output of 1.0 mV or less) and low gain (recommended for cartridges with
rated output greater than 1.0 mV) versions of the phono stage. Input resistive
loading is switch selectable over a range from 47 kOhms down to 200 Ohms. The
ET3 phono stage is built to the same high quality standard found in the ET3
line-stage. Premium quality component parts are specified to optimize
performance and to sustain that performance for years to come. Precision,
metal-film resistors yield low noise performance for greatest clarity.
Polypropylene capacitors, used exclusively in the audio circuits and the
regulated plate voltage supplies, offer extraordinary temporal accuracy. In fact,
the ET3 is built to standards that meet or exceed those of many companies’
“flagship” offerings. Those who wish to take the performance to yet a higher
level will be thrilled by the availability of an upgraded “SE” version. The
ET3SE boasts CJD Teflon capacitors in critical circuit applications, dozens of
upgraded metal foil resistors (including ALL resistors in the stepped attenuator
level control), upgraded machined input/output connectors, and even an upgrade
AC mains line-cord. It would be fair to say that the only thing “entry-level”
about the ET3 is its price. Arrange to audition one at a conrad-johnson dealer
to find out for yourself – you’ll be surprised at just how affordable true high-end
performance can be. ET3/ET3SE Preamplifier
Specifications Gain: 25 db Maximum output: 20 Vrms Output impedance: 100 ohms
Distortion:less than .15% THD at 1.0 Vrms output Frequency response: at unity
gain 2 Hz to more than 100Khz Hum and noise: 98 db below 2.5 v Tube complement:
1 x 6922 ET3 Optional Phono Stage High Gain Version 54dB Low Gain Version 40dB
RIAA Equalization: +/- .25 db 20Hz to 20kHz Hum and Noise: -80dB relative to
10mV input Phase: phase correct Tube Compliment: High Gain Version 3x 12AX7 Low
Gain Version 2x 12AX7, 1x 12AU7 Dimensions 13.125D x 19W x 3.315H inches Total
Weight 13 lbs.
CONRAD JOHNSON
CT6
LISTINO UFFICIALE €.
7.930,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
a valvole solo Linea. Caratteristiche: Guadagno: 26 db; Potenza massima: 15 Vrms;
Impedenza di uscita: 850 ohm; Distorsione: 1,0V di uscita inferiore a 0,25 THD;
Risposta in frequenza: a guadagno unitario: 2 Hz a10OKhz; Ronzio e rumore: la
linea-fase 100 dB al di sotto 2,5 V; Valvole: 4 x 6922; Dimensioni: 39,4 x 48,3
x 8,4 cm; Peso totale: 8,6 Kg.
CONRAD JOHNSON
ET5
LISTINO UFFICIALE €.15.840,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
a valvole solo Linea. Caratteristiche: Guadagno: 25 db; Potenza massima:
20 Vrms; Impedenza di uscita: 100 ohm; Distorsione: meno di 0,15% THD a 1,0 Vrms
uscita; Risposta in frequenza: 2 Hz a oltre 100Khz; Ronzio e rumore: 100 dB al
di sotto di 2,5 v; Valvole: 1 x 6922; Dimensioni: (P x L x A) 39 x 48,3 x 12,6
cm;Peso totale: 12,7 Kg.
ET5 Enhanced Triode
Preamplifier Introduced in 2009, the GAT Preamplifier continues conrad-johnson’s
dominant position atop the rankings of reference preamplifiers. An important
benefit of pursuing state-of-the-art designs is that the circuits and techniques
developed in our flagship products are frequently directly applicable to our
entire line of products. In this instance, we have embodied the technology of
the GAT Preamplifier in the more cost effective ET5 enhance triode line-stage
preamplifier at a more affordable price. The circuitry of the ET5 follows
closely that of the GAT line-stage preamplifier. The audio circuit is elegant in
its simplicity. An audio amplifier stage consisting of a single-ended triode
amplifier provides the voltage gain. This amplifier stage is connected to the
preamplifier outputs through a high-current MOSFET buffer, which achieves a very
low output impedance, making the ET5 extremely flexible in the choice of
interconnect cables and amplifiers. DC voltage is supplied to the circuit by our
latest discrete voltage regulator that isolates the audio circuit from the power
line by maintaining negligible impedance across the audio frequency band.
Infra-sonic noise is minimized by operating the tube filaments (heaters) on a dc
voltage supplied by a separate regulated power supply. The ET5 is also notable
for convenience and ease of use. The unit features input selection and level
adjustment by microprocessor-controlled relays, with controls available both at
the front panel and via a full-function remote. All control functions of the ET5
operate through microprocessor-controlled relays. For the level control, the
relays select combinations from a network of precision, low-noise metal foil
resistors to effect loudness and balance changes in 100 steps of approximately
.7dB per step. All switching and adjustment can be controlled by the unit’s
remote control. A Theater Mode, which passes the input signal through at unity
gain, makes it simple to incorporate the ET5 into a high quality home theater
system without compromising its two-channel performance. Like its bigger brother,
the GAT, the ET5 is constructed from the highest quality, carefully selected
parts for unrivaled sonic performance and reliability. Tubes have been carefully
hand selected for minimum noise and microphonics. The same CJD Teflon capacitors
that distinguish the GAT are used in the ET5 for output coupling and
post-regulator power supply storage. All other capacitors in the audio circuits
and related power supplies are polypropylene or polystyrene – there are no
electrolytic capacitors in the audio related circuits. The resistors in these
circuits (including the two dozen level control resistors) are special low
inductance, high-precision laser-trimmed metal foil resistors. Switches are
sealed relays with gold-plated silver contacts. Input and output connectors are
premium quality custom machined parts. ET5 Preamplifier Specifications
Gain: 25 db Maximum output: 20 vrms Output impedance: 100 ohms Distortion: less
than .15% THD at 1.0 Vrms output Frequency response: at unity gain 2 Hz to more
than 100Khz Hum and noise: 100 db below 2.5 v Tube complement: 1 x 6922
Dimensions 15.375D x 19W x 4.94H inches Total Weight 28 lbs. 3-Year Warranty
CONRAD JOHNSON
ACT2V2 LISTINO
UFFICIALE €.24.330,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
a valvole solo Linea. Caratteristiche: Guadagno: 21.5 db; Potenza massima: 10
Vrms; Impedenza di uscita: sotto 500 ohm; Distorsione: meno 0,1% THD; Risposta
in frequenza: a guadagno unitario: 2 Hz a oltre 100Khz; Ronzio e rumore: 100 dB
al di sotto 1.0 v; Valvole: 4 x 6N30P; Dimensioni: 40 x 48,3 x 13,7 cm; Peso
totale: 13,6 Kg.
CONRAD JOHNSON
GATV2 LISTINO
UFFICIALE €. 29.720,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
a valvole solo Linea di Riferimento. Caratteristiche: Guadagno: 25 db; Potenza
massima: 20 Vrms; Impedenza di uscita: sotto 100 ohm; Distorsione: meno di 0,15%
THD; Risposta in frequenza: a guadagno unitario: 2 Hz a oltre 100Khz; Ronzio e
rumore: 100 dB al di sotto di 1.0 v; Valvole: 2 x PCC88; Dimensioni: (P x L x A)
39 x 48,3 x 12,2 cm; Peso totale: 15,9 Kg.
GAT Preamplifier The GAT Preamplifier embodies
conrad-johnson’s latest advances in line-stage preamplifier technology. We
believe that it will quickly be recognized as the new industry-wide reference
standard for line-stage preamplifier performance, a role filled for more than a
decade by its legendary predecessor, the ART preamplifier. Like the ART, the GAT
Preamplifier will be available in a numbered, limited edition of 250 units which
will be sold through selected conrad-johnson dealers. The GAT Preamplifier is a
vacuum-tube, line-stage preamplifier that looks as good as it sounds. It is also
notable for convenience and ease of use. The unit features input selection and
level adjustment by microprocessor-controlled relays. Level and balance can be
adjusted in 100 steps of approximately .7 dB per step. All functions can be
controlled by the hand-held wireless remote control. The circuitry of the GAT
Preamplifier is elegant in its simplicity. The audio circuit consists of a
single amplifier stage incorporating one composite triode comprised of
paralleled sections of a high-transconductance miniature dual triode vacuum
tube. This amplifier stage is coupled to the preamplifier outputs through a
high-current MOSFET buffer, which achieves a very low output impedance, making
the GAT extremely flexible in the choice of interconnect cables and amplifiers.
DC voltage is supplied to the circuit by our latest discrete voltage regulator
that isolates the audio circuit from the power line by maintaining negligible
impedance across the audio frequency band. Infrasonic noise is minimized by
operating the tube filaments (heaters) on a dc voltage supplied by another
discrete regulated power supply. Considerable care and attention have been paid
to the physical aspects of the design as well. Microprocessor controlled relays,
used for selecting sources and level setting, are located right at the input
connectors, keeping signal paths short to minimize crosstalk between channels
and inputs. The vacuum-tubes are isolated by a suspension system designed to
minimize microphonics. The dramatic casework features attractive clear Lucite
tube guards outside the chassis, allowing for easy access for tube replacement.
At conrad-johnson we have long appreciated that the full potential of any
circuit can only be realized by using the finest available parts. Each part for
the GAT has been selected on the basis of both sonic performance and durability.
The audio circuit (including the level control) is executed entirely with
precision metal foil resistors and proprietary CJD Teflon capacitors. Tubes have
been carefully hand selected for minimum noise and microphonics. The dc
regulated power supplies use the same quality resistors as the audio circuits.
Capacitors for the power supplies are exclusively polypropylene and Teflon –
there are no electrolytic capacitors in the audio circuits or their related
power supplies. All signal switching is done by special relays designed for
signal applications. These relays are sealed and have gold plated silver
contacts. Input and output connectors are machined from oxygen free copper, and
are gold plated. The GAT is built without compromise to achieve a new standard
in musical performance, and it is built to las GAT Triode Preamplifier
Specifications Gain: 25 db Maximum output: 20 vrms Output impedance: under 100
ohms Distortion: less than .15% THD Frequency response: at unity gain 2 Hz to
more than 100Khz Hum and noise: 100 db below 1.0 v Tube complement: 2 x 6922
Dimensions 15.375D x 19W x 4.81H inches Total Weight 35 lbs.
PREPHONO
CONRAD JOHNSON
TEA-2
LISTINO
UFFICIALE €. 5.200,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
Phono a valvole disponibile nelle versioni ad Alto Guadagno o Basso Guadagno.
Caratteristiche: guadagno: •Versione Basso Guadagno - 40 dB•Versione Alto
Guadagno - 55 dB; sovraccarico: •Versione Basso Guadagno - 175 mV •Versione Alto
Guadagno - 50 mV; Ronzio e rumore: Ingressi diretti - 80 dB inferiori a 10 mV;
Ouput Impedenza: inferiore a 200 ohm; dimensioni: (P x L x A) 34,6 x 48,3 x 9,2;
Peso netto: 6,4 Kg
The TEA-2 triode equalization amplifier is a vacuum-tube phono stage offering an
extraordinary degree of musical accuracy at a moderate price. The audio circuit
of the TEA-2 is comprised of two cascaded single-ended triode amplifiers. The
circuit is a zero-feedback design, to eliminate the temporal inaccuracies that
negative feedback introduces. RIAA equalization is established by a passive
network between the two gain stages. This network has been carefully designed
and has been implemented with precision (1% tolerance) parts to precisely track
the prescribed RIAA equalization curve assuring absolute tonal accuracy. Careful
implementation of this fundamentally simple circuit results in extremely wide
bandwidth, and low distortion, without resorting to negative feedback. A
high-current MOSFET buffer stage follows the second gain stage to achieve a low
output impedance (less than 200 Ohms). In the TEA-2, discrete regulated power
supplies, carefully designed for minimum impedance, even at the highest audio
frequencies, isolate the amplifier stages from the ac line and from each other
to guarantee that power supply irregularities do not degrade the audio
performance. The TEA-2 is available in high-gain (55 dB) and low gain (40 dB)
versions to match a wide range of modern phono cartridges. The high gain version
is recommended for use with cartridges with a rated output of 1.0 mV or below.
The low gain version is best suited to higher output cartridges. Both versions
offer switch selectable resistive loading allowing the user to fine-tune
performance to the chosen phono cartridge. The performance of any audio
component is only as good as its component parts. The audio circuits and the
related regulated power supplies of the TEA-2 use polypropylene and polystyrene
capacitors and precision metal film and metal foil resistors exclusively. All
parts in the TEA-2's RIAA compensation network are 1% tolerance, to assure
precise tracking of the RIAA curve. Input and output connectors and even hook-up
wiring have been carefully selected for audio performance.
Specifications Gain: Low
Gain - 40 dB High Gain - 55 dB Overload: Low Gain - 175 mV
High Gain - 50 mV Hum and Noise: Direct Inputs - 80 dB below 10 mV
input Phase: phase correct Ouput Impedance: below 200
ohms Dimensions: 13.625"D x 19"W x 3.625"H Net Weight:
14 lb
CONRAD JOHNSON
TEA-2SE
LISTINO
UFFICIALE €. 7.830,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore
Phono a valvole Special Edition disponibile nelle versioni ad Alto Guadagno o
Basso Guadagno. Caratteristiche: guadagno: •Versione Basso Guadagno - 40 dB
•Versione Alto Guadagno - 55 dB; sovraccarico: •Versione Basso Guadagno - 175 mV
•Versione Alto Guadagno - 50 mV; Ronzio e rumore: Ingressi diretti - 80 dB
inferiori a 10 mV; Ouput Impedenza: inferiore a 200 ohm; dimensioni: (P x L x A)
34,6 x 48,3 x 9,2; Peso netto: 6,4 Kg
The TEA2SE takes the parts quality up a notch further. Sixteen of the most
critical resistors in the audio circuit are upgraded to laser-trimmed metal foil
resistors. A dozen capacitors are upgraded to CJD Teflon capacitors (chosen for
their exceptionally low "memory" characteristic), including intra-stage coupling
capacitors and critical "bypass" capacitors. Finally, the ac line cord is
upgraded to an excellent medical grade cord. Specifications Gain:
Low Gain - 40 dB High Gain - 55 dB Overload: Low Gain - 175 mV
High Gain - 50 mV Hum and Noise: Direct Inputs - 80 dB below 10 mV
input Phase: phase correct Ouput Impedance: below 200
ohms Dimensions: 13.625"D x 19"W x 3.625"H Net Weight:
14 lb
CONRAD JOHNSON
TEA-2MAX
LISTINO UFFICIALE €.
11.340,00
Per offerta e promozioni Telefona /e -mail
Preamplificatore Phono a valvole
The TEA2MAX exhibits the extensive use of premium parts found in our flagship
offerings. All resistors (34 in total) in the audio circuit and its regulated
power supply are upgraded to the laser-trimmed metal foil types and in addition
to the bypass capacitor upgrades found in the SE, the 4.0 micro Farad output
coupling capacitors are upgraded to CJD Teflon as well. As in the SE, the ac
line cord is also upgraded. Thoughtful engineering, specification of quality
component parts, and painstaking care in production are clearly on display in
each of the TEA-2 models. Each step up from the basic TEA2 to the TEA2SE and on
to the TEA2MAX offers further refinement in detail, imaging, and "micro"
dynamics. But you are sure to find all versions to be phono equalization
preamplifiers of remarkable musicality. Specifications Gain: Low
Gain - 40 dB High Gain - 55 dB Overload: Low Gain - 175 mV
High Gain - 50 mV Hum and Noise: Direct Inputs - 80 dB below 10 mV
input Phase: phase correct Ouput Impedance: below 200
ohms Dimensions: 13.625"D x 19"W x 3.625"H Net Weight:
14 lb
FINALI IBRIDI
CONRAD JOHNSON
ET250S
LISTINO UFFICIALE €.
13.500,00
Per offerta e promozioni Telefona /e -mail
Amplificatore di potenza stereo ibrido 250W.
Caratteristiche: Potenza: 250 Watt per canale da 20 Hz a 20 kHz a non più
del 2% THD, entrambi i canali su 8 Ohm, o 400 watt per canale a 4 ohm;
sensibilità: 1.85V a potenza nominale; Risposta in frequenza (a 10 Watt): 20 Hz
a 20 kHz, +/- 0,25 dB; Ronzio e rumore: 104 dB sotto potenza nominale; Impedenza
di ingresso: 100 kOhm; Valvole: 2 x 6922; dimensioni: 41 x 48,3 x 18,26 cm;
peso: 29,5 Kg.
The ET250S is a 250-watt per channel stereo power
amplifier, the MET150 a five-channel amplifier rated at 150 watts per channel.
These sophisticated zero-feedback amplifiers offer the refinement of a
vacuum-tube amplifier with the guts and control of a solid-state amplifier. Zero
Feedback. Negative feedback is an engineering technique used to reduce measured
distortion. While feedback does achieve this goal, it also introduces
aberrations in the transient response characteristics of the circuit. We have
found that eliminating loop negative feedback can result in much finer
gradations in dynamic response (micro-dynamics) and more accurate decay on
musical transients. But eliminating negative feedback requires much more care in
the design of the circuits—both in choosing devices and in power-supply
design—and places greater demands on the parts. The Right Device for the Job. A
power amplifier has two distinctly different functions. First, a voltage gain
stage must increase the amplitude of the input signal by a factor of about
thirty. The distortion characteristics of the amplifier are dominated by this
stage. No device is better suited to accurately amplifying signals at high
amplitude than triode vacuum tubes. For our enhanced triode amplifiers, voltage
gain is provided by a 6922 vacuum tube, selected for its ability to track a high
amplitude signal accurately. Theory and 30 years of experience have taught us
that the voltage gain stage of a power amplifier dominates the sonic character
of the critical mid-range of a power amplifier, and indeed these amplifiers
exhibit the smooth, lucid midrange for which tube amplifiers are so highly
esteemed. The high amplitude signal produced by the voltage gain stage must then
be efficiently coupled to the loudspeaker system through an output stage to
produce the power and control needed for a musically accurate response –
basically to provide current gain and a low output impedance. High-current
bi-polar devices have been specified for the output stages of these amplifiers,
based on their extremely low output impedance and their ability to handle a
great deal of current. This contributes the fast, weighty bass and seemingly
limitless power reserve that are notable in these amplifiers. Solid Power
Supplies. Rock solid power supplies are needed to enable the audio circuits to
reach their potential on musical transients. The ET amplifiers feature oversized
main power transformers (so that the circuits are not starved for current), and
massive power storage reservoirs with high-speed capacitor shunts to deliver
quick, even startling transient response. Carefully designed DC voltage
regulators isolate the critical voltage gain stages to prevent demands of the
output stage from modulating the input signal. Quality Parts. Conrad-Johnson
components are internationally known for the quality of their parts, and the ET
amplifiers are no exception. The audio circuits and their related power supplies
utilize precision low inductance laser-trimmed metal foil resistors. The
circuits employ polypropylene, polystyrene and Teflon capacitors extensively,
except in the main power supply storage, where high-speed electrolytics are used
because of the extremely high capacitance required. Precision-machined
input/output connectors have been carefully selected for optimal sonic
performance. Even the internal wiring is chosen on the basis of its sound
quality in its specific application. Thoughtful engineering, specification of
top quality component parts, and painstaking care taken in production make the
MET150 and ET250S capable of extraordinary performance in music reproduction. We
invite you to arrange an audition with your conrad-johnson dealer to confirm for
yourself the extraordinary musicality of these amplifiers. Specifications
Power: ET250S – 250 Watts per channel from 20 Hz to 20 KHz at no more than 2 %
THD, both channels driven into 8 Ohms, or 400 watts per channel driven into 4
Ohms. MET150 – 5 x 150 Watts from 20 Hz to 20 kHz at no more than 2 % THD into 8
Ohms, or 5 x 250 Watts into 4 Ohms.Sensitivity: ET250S – 1.85V to rated power.
MET150 – 1.5V to rated power. Frequency Response (at 10 Watts): 20 Hz to 20 kHz,
+/- .25 dB Hum and Noise: 104 dB below rated power Input Impedance: 100 kOhms
Tube Complement: ET250S – 2 x 6922 MET150 – 5 x 6922 Mechanical: Dimensions
(ET250S and MET150) – 16.125D x 19W x 7.188H inches Weight (ET250S and MET150) –
65 Lbs.
FINALI STATO SOLIDO
CONRAD JOHNSON
MF2275
LISTINO
UFFICIALE €. 6.110,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stato solido a Mosfet da 135W
per canale. Caratteristiche: Potenza: 135 Watt per canale da 20 Hz a 20 kHz a
non THD oltre il 1,0% o IMD, entrambii canali pilotati a 8 ohm; sensibilità: 2.0
volt RMS per potenza nominale; Rispostain frequenza (a 10 Watt): 20 Hz a 20 kHz,
+/- 0,1 dB; Ronzio e rumore: 100 dB sotto potenza di ingresso nominale;
impedenza: 100 KOhms; dimensioni: (P x L x A) 37,1 x 48,3 x 12,4 cm; peso: 15 Kg
MF2550 and MF2275 Solid State Amplifiers At
conrad-johnson we have a simple formula for achieving highly accurate, highly
musical amplifiers: straight-forward, simple circuits designed for linear
operation without excessive loop inverting feedback exceptional component parts
selected for their ability to provide uncolored accuracy in music reproduction
Straightforward circuits provide simpler, more direct signal paths and require
fewer component parts to implement. This is desirable because all component
parts fall short of ideal and impose limits to transparency. Fewer parts means
less of the unavoidable coloration that is imposed by each part, even the best
available. Fewer parts means that the budget can be concentrated to obtain the
often costly best available parts especially for key circuit applications. The
design of limited feedback circuit demands discipline from the circuit designer
in developing a circuit in which each stage functions linearly without requiring
external correction from a feedback loop. Our latest solid-state amplifiers, the
MF2550 and MF2275, nicely embody this approach. Differing primarily in power
output rating, these amplifiers share a common circuit design. High voltage FETS
permit highly linear operation of the critical first voltage gain stage, while
bi-polar transistors are used to configure an output stage with low output
impedance to deliver maximum current to reactive speaker loads. Linear operation
of the audio circuit requires a power supply designed to maintain absolutely
fixed operating voltages while meeting current demands that fluctuate rapidly
with the music itself. This imposes on the power supply similar design and
component choice requirements as on the audio circuit itself. These amplifiers
feature discrete dc regulators to power the critical voltage gain stage. The
power supplies and grounds for the input and output stages are run by separate
power transformer windings to isolate the input stage from the effects of the
substantial current flows required in the output stage. Circuit design is a
combination of science and art. At every step consideration must be given to how
a circuit will be implemented. The realized performance will depend critically
on the selected component parts. Conrad-Johnson products are known for unmatched
quality of parts with custom-made film capacitors and precision metal film and
metal foil resistors. We even use large 30 micro-Farad polypropylene capacitors
for critical circuit applications where other designs commonly use non-polar
electrolytic capacitors, the factor of 1000 reduction in dielectric absorption
of polypropylene resulting in a cleaner sound. The power supply electrolytic
capacitors are bypassed with high quality polypropylene film capacitors that
provide a small but quicker responding current reservoir. For those wishing to
take the musical experience a step further there are available special “SE”
versions of these amplifiers which achieve further refinement in imaging, focus,
and detail by upgrading a dozen or more critical capacitors to our proprietary
CJD Teflon hybrid capacitors and a couple of dozen resistors to precision metal
foil types. Our obsession with parts quality extends to the connections within
the circuit itself. Power supply, signal and ground traces and wiring are parts
of the circuit with limitations and shortcomings that must be accounted for. To
enable the output stage to deliver substantial bursts of current, the layout
provides storage capacitors close to each output device. The internal power
supply connections and ground returns between the main supply and these local
storage depots are accomplished with heavy, audiophile grade multi-stranded wire
in order to minimize the impedance of these longer runs.
Power MF2550 250 Watts per channel from 20 Hz to 20 KHz at no more than 1.0%
THD or IMD, both channels driven into 8 ohms. MF2275 135 Watts per channel from
20 Hz to 20 KHz at no more than 1.0% THD or IMD, both channels driven into 8
ohms. Sensitivity MF2550 2.0 Volts rms to rated power MF2275 1.35 Volts rms to
rated power Frequency Response (at 10 Watts) 20 Hz to 20 kHz, +/- .1 dB Hum and
Noise 100 dB below rated power Input Impedance 100 KOhms Dimensions MF2550
16.25D x 19W x 6.125H inches MF2275 14.625D x 19W x 4.875H inches Weight MF2550
52 lb. net MF2275 33 lb. net
CONRAD JOHNSON
MF2275SE
LISTINO UFFICIALE €.
9.760,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stato solido a Mosfet da 135W
per canale Special Edition. Caratteristiche: Potenza: 135 Watt per canale da 20
Hz a 20 kHz a non THD oltre il 1,0% o IMD, entrambi i canali pilotati a 8 ohm;
sensibilità: 2.0 volt RMS per potenza nominale; Risposta in frequenza (a 10
Watt): 20 Hz a 20 kHz, +/- 0,1 dB; Ronzio e rumore: 100 dB sotto potenza di
ingresso nominale; impedenza: 100 KOhms; dimensioni: (P x L x A) 37,1 x 48,3 x
12,4 cm; peso: 15 Kg
MF2550 and MF2275 Solid State Amplifiers At
conrad-johnson we have a simple formula for achieving highly accurate, highly
musical amplifiers: straight-forward, simple circuits designed for linear
operation without excessive loop inverting feedback exceptional component parts
selected for their ability to provide uncolored accuracy in music reproduction
Straightforward circuits provide simpler, more direct signal paths and require
fewer component parts to implement. This is desirable because all component
parts fall short of ideal and impose limits to transparency. Fewer parts means
less of the unavoidable coloration that is imposed by each part, even the best
available. Fewer parts means that the budget can be concentrated to obtain the
often costly best available parts especially for key circuit applications. The
design of limited feedback circuit demands discipline from the circuit designer
in developing a circuit in which each stage functions linearly without requiring
external correction from a feedback loop. Our latest solid-state amplifiers, the
MF2550 and MF2275, nicely embody this approach. Differing primarily in power
output rating, these amplifiers share a common circuit design. High voltage FETS
permit highly linear operation of the critical first voltage gain stage, while
bi-polar transistors are used to configure an output stage with low output
impedance to deliver maximum current to reactive speaker loads. Linear operation
of the audio circuit requires a power supply designed to maintain absolutely
fixed operating voltages while meeting current demands that fluctuate rapidly
with the music itself. This imposes on the power supply similar design and
component choice requirements as on the audio circuit itself. These amplifiers
feature discrete dc regulators to power the critical voltage gain stage. The
power supplies and grounds for the input and output stages are run by separate
power transformer windings to isolate the input stage from the effects of the
substantial current flows required in the output stage. Circuit design is a
combination of science and art. At every step consideration must be given to how
a circuit will be implemented. The realized performance will depend critically
on the selected component parts. Conrad-Johnson products are known for unmatched
quality of parts with custom-made film capacitors and precision metal film and
metal foil resistors. We even use large 30 micro-Farad polypropylene capacitors
for critical circuit applications where other designs commonly use non-polar
electrolytic capacitors, the factor of 1000 reduction in dielectric absorption
of polypropylene resulting in a cleaner sound. The power supply electrolytic
capacitors are bypassed with high quality polypropylene film capacitors that
provide a small but quicker responding current reservoir. For those wishing to
take the musical experience a step further there are available special “SE”
versions of these amplifiers which achieve further refinement in imaging, focus,
and detail by upgrading a dozen or more critical capacitors to our proprietary
CJD Teflon hybrid capacitors and a couple of dozen resistors to precision metal
foil types. Our obsession with parts quality extends to the connections within
the circuit itself. Power supply, signal and ground traces and wiring are parts
of the circuit with limitations and shortcomings that must be accounted for. To
enable the output stage to deliver substantial bursts of current, the layout
provides storage capacitors close to each output device. The internal power
supply connections and ground returns between the main supply and these local
storage depots are accomplished with heavy, audiophile grade multi-stranded wire
in order to minimize the impedance of these longer runs.
Power MF2550 250 Watts per channel from 20 Hz to 20 KHz at no more than 1.0%
THD or IMD, both channels driven into 8 ohms. MF2275 135 Watts per channel from
20 Hz to 20 KHz at no more than 1.0% THD or IMD, both channels driven into 8
ohms. Sensitivity MF2550 2.0 Volts rms to rated power MF2275 1.35 Volts rms to
rated power Frequency Response (at 10 Watts) 20 Hz to 20 kHz, +/- .1 dB Hum and
Noise 100 dB below rated power Input Impedance 100 KOhms Dimensions MF2550
16.25D x 19W x 6.125H inches MF2275 14.625D x 19W x 4.875H inches Weight MF2550
52 lb. net MF2275 33 lb. net
CONRAD JOHNSON
MF2550
LISTINO UFFICIALE €.
8.250,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stato
solido a Mosfet da 250W per canale. Caratteristiche: Potenza:250 Watt per canale
da 20 Hz a 20 kHz a non THD oltre il 1,0% o IMD, entrambi i canali pilotati a 8
ohm; sensibilità: 2.0 volt RMS per potenza nominale; Risposta in frequenza (a 10
Watt): 20 Hz a 20 kHz, +/- 0,1 dB; Ronzio e rumore:100 dB sotto potenza di
ingresso nominale; impedenza: 100 KOhms; dimensioni: (P x L x A) 41,3 x 48,3 x
15,6 cm; peso: 23,6 Kg
MF2550 and MF2275 Solid State Amplifiers At
conrad-johnson we have a simple formula for achieving highly accurate, highly
musical amplifiers: straight-forward, simple circuits designed for linear
operation without excessive loop inverting feedback exceptional component parts
selected for their ability to provide uncolored accuracy in music reproduction
Straightforward circuits provide simpler, more direct signal paths and require
fewer component parts to implement. This is desirable because all component
parts fall short of ideal and impose limits to transparency. Fewer parts means
less of the unavoidable coloration that is imposed by each part, even the best
available. Fewer parts means that the budget can be concentrated to obtain the
often costly best available parts especially for key circuit applications. The
design of limited feedback circuit demands discipline from the circuit designer
in developing a circuit in which each stage functions linearly without requiring
external correction from a feedback loop. Our latest solid-state amplifiers, the
MF2550 and MF2275, nicely embody this approach. Differing primarily in power
output rating, these amplifiers share a common circuit design. High voltage FETS
permit highly linear operation of the critical first voltage gain stage, while
bi-polar transistors are used to configure an output stage with low output
impedance to deliver maximum current to reactive speaker loads. Linear operation
of the audio circuit requires a power supply designed to maintain absolutely
fixed operating voltages while meeting current demands that fluctuate rapidly
with the music itself. This imposes on the power supply similar design and
component choice requirements as on the audio circuit itself. These amplifiers
feature discrete dc regulators to power the critical voltage gain stage. The
power supplies and grounds for the input and output stages are run by separate
power transformer windings to isolate the input stage from the effects of the
substantial current flows required in the output stage. Circuit design is a
combination of science and art. At every step consideration must be given to how
a circuit will be implemented. The realized performance will depend critically
on the selected component parts. Conrad-Johnson products are known for unmatched
quality of parts with custom-made film capacitors and precision metal film and
metal foil resistors. We even use large 30 micro-Farad polypropylene capacitors
for critical circuit applications where other designs commonly use non-polar
electrolytic capacitors, the factor of 1000 reduction in dielectric absorption
of polypropylene resulting in a cleaner sound. The power supply electrolytic
capacitors are bypassed with high quality polypropylene film capacitors that
provide a small but quicker responding current reservoir. For those wishing to
take the musical experience a step further there are available special “SE”
versions of these amplifiers which achieve further refinement in imaging, focus,
and detail by upgrading a dozen or more critical capacitors to our proprietary
CJD Teflon hybrid capacitors and a couple of dozen resistors to precision metal
foil types. Our obsession with parts quality extends to the connections within
the circuit itself. Power supply, signal and ground traces and wiring are parts
of the circuit with limitations and shortcomings that must be accounted for. To
enable the output stage to deliver substantial bursts of current, the layout
provides storage capacitors close to each output device. The internal power
supply connections and ground returns between the main supply and these local
storage depots are accomplished with heavy, audiophile grade multi-stranded wire
in order to minimize the impedance of these longer runs.
Power MF2550 250 Watts per channel from 20 Hz to 20 KHz at no more than 1.0%
THD or IMD, both channels driven into 8 ohms. MF2275 135 Watts per channel from
20 Hz to 20 KHz at no more than 1.0% THD or IMD, both channels driven into 8
ohms. Sensitivity MF2550 2.0 Volts rms to rated power MF2275 1.35 Volts rms to
rated power Frequency Response (at 10 Watts) 20 Hz to 20 kHz, +/- .1 dB Hum and
Noise 100 dB below rated power Input Impedance 100 KOhms Dimensions MF2550
16.25D x 19W x 6.125H inches MF2275 14.625D x 19W x 4.875H inches Weight MF2550
52 lb. net MF2275 33 lb. net
CONRAD JOHNSON
MF2550SE
LISTINO UFFICIALE €.
12.380,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stato solido a Mosfet da 250W
per canale Special Edition. Caratteristiche: Potenza: 250 Watt per canale
da 20 Hz a 20 kHz a non THD oltre il 1,0% o IMD, entrambi i canali pilotati a 8
ohm; sensibilità: 2.0 volt RMS per potenza nominale; Risposta in frequenza (a 10
Watt): 20 Hz a 20 kHz, +/- 0,1 dB; Ronzio e rumore: 100 dB sotto potenza di
ingresso nominale; impedenza: 100 KOhms; dimensioni: (P x L x A) 41,3 x 48,3 x
15,6 cm; peso: 23,6 Kg
MF2550 and MF2275 Solid State Amplifiers At
conrad-johnson we have a simple formula for achieving highly accurate, highly
musical amplifiers: straight-forward, simple circuits designed for linear
operation without excessive loop inverting feedback exceptional component parts
selected for their ability to provide uncolored accuracy in music reproduction
Straightforward circuits provide simpler, more direct signal paths and require
fewer component parts to implement. This is desirable because all component
parts fall short of ideal and impose limits to transparency. Fewer parts means
less of the unavoidable coloration that is imposed by each part, even the best
available. Fewer parts means that the budget can be concentrated to obtain the
often costly best available parts especially for key circuit applications. The
design of limited feedback circuit demands discipline from the circuit designer
in developing a circuit in which each stage functions linearly without requiring
external correction from a feedback loop. Our latest solid-state amplifiers, the
MF2550 and MF2275, nicely embody this approach. Differing primarily in power
output rating, these amplifiers share a common circuit design. High voltage FETS
permit highly linear operation of the critical first voltage gain stage, while
bi-polar transistors are used to configure an output stage with low output
impedance to deliver maximum current to reactive speaker loads. Linear operation
of the audio circuit requires a power supply designed to maintain absolutely
fixed operating voltages while meeting current demands that fluctuate rapidly
with the music itself. This imposes on the power supply similar design and
component choice requirements as on the audio circuit itself. These amplifiers
feature discrete dc regulators to power the critical voltage gain stage. The
power supplies and grounds for the input and output stages are run by separate
power transformer windings to isolate the input stage from the effects of the
substantial current flows required in the output stage. Circuit design is a
combination of science and art. At every step consideration must be given to how
a circuit will be implemented. The realized performance will depend critically
on the selected component parts. Conrad-Johnson products are known for unmatched
quality of parts with custom-made film capacitors and precision metal film and
metal foil resistors. We even use large 30 micro-Farad polypropylene capacitors
for critical circuit applications where other designs commonly use non-polar
electrolytic capacitors, the factor of 1000 reduction in dielectric absorption
of polypropylene resulting in a cleaner sound. The power supply electrolytic
capacitors are bypassed with high quality polypropylene film capacitors that
provide a small but quicker responding current reservoir. For those wishing to
take the musical experience a step further there are available special “SE”
versions of these amplifiers which achieve further refinement in imaging, focus,
and detail by upgrading a dozen or more critical capacitors to our proprietary
CJD Teflon hybrid capacitors and a couple of dozen resistors to precision metal
foil types. Our obsession with parts quality extends to the connections within
the circuit itself. Power supply, signal and ground traces and wiring are parts
of the circuit with limitations and shortcomings that must be accounted for. To
enable the output stage to deliver substantial bursts of current, the layout
provides storage capacitors close to each output device. The internal power
supply connections and ground returns between the main supply and these local
storage depots are accomplished with heavy, audiophile grade multi-stranded wire
in order to minimize the impedance of these longer runs.
Power MF2550 250 Watts per channel from 20 Hz to 20 KHz at no more than 1.0%
THD or IMD, both channels driven into 8 ohms. MF2275 135 Watts per channel from
20 Hz to 20 KHz at no more than 1.0% THD or IMD, both channels driven into 8
ohms. Sensitivity MF2550 2.0 Volts rms to rated power MF2275 1.35 Volts rms to
rated power Frequency Response (at 10 Watts) 20 Hz to 20 kHz, +/- .1 dB Hum and
Noise 100 dB below rated power Input Impedance 100 KOhms Dimensions MF2550
16.25D x 19W x 6.125H inches MF2275 14.625D x 19W x 4.875H inches Weight MF2550
52 lb. net MF2275 33 lb. net
AMPLIFICATORI
FINALI
VALVOLARI
CONRAD JOHNSON CLASSIC
SIXTY
LISTINO UFFICIALE €.
5.950,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stereo a valvole KT120 60W.
Caratteristiche: Potenza: 60 watt per canale da 30 Hz a 15 KHz senza alcun THD
oltre il 1,5%, entrambi i canali a 4 ohm (disponibile anche in contatto per 8 o
16 ohm); Sensibilità: 0.7 V a potenza nominale; Risposta in frequenza (a 10
watt): 20 Hz a 20 kHz, +/- 0,3 dB; Ronzio e rumore: 96 dB sotto potenza
nominale; Impedenza di ingresso: 100 kOhm; Valvole: 1x 6189, 2x 6922, 4x EL34;
Dimensioni: (P x L x A) 33,7 x 44,1 x 16,8 cm; Peso: 18,6 Kg
Classic Sixty Vacuum-Tube Amplifier Tasked with
developing the most cost effective amplifier that we could build, consistent
with our standards of quality of construction and performance, the
conrad-johnson design team turned to our flagship product for inspiration.
Borrowing heavily on the technology of its big brother, the ART amplifier, the
Classic Sixty preserves the distinctive tonal character of individual
instruments and voices, with each clearly located within the overall acoustical
environment of the original recording. Musical transients are reproduced with
realistic impact, but without artificial enhancement. Like its more costly
siblings, the Classic Sixty captures the emotional impact of the live event,
never getting between the listener and the musical performance. There really is
no mystery to the basis for outstanding musical performance: best results come
from simple circuits executed with quality parts. The Classic Sixty amplifier
circuit design is about as simple as possible, employing just seven vacuum-tubes.
Single-ended triode voltage gain and inverter stages are coupled to an output
stage comprised of a single pair of ultra-linear operated EL34 tubes for each
channel. As it is critically important that the DC voltage supplied to the gain
stages be absolutely rock-solid stable, these voltages are provided by simple
but highly effective discrete voltage regulators. And speaking of simple,
maintenance of the Classic Sixty could hardly be easier: the owner need only
make a simple bias adjustment using the built in bias indicators when installing
fresh output tubes. The use of premium quality component parts is the other half
of our underlying design mandate. In this area as well, the Classic Sixty is a
leader in its class. Precision, metal-film resistors yield low noise performance
for greatest clarity. Polypropylene and polystyrene capacitors, chosen to
achieve a high degree of temporal accuracy, are specified for both the audio
circuits and the regulated plate voltage supplies for the input and inverter
stages. The result is an exceptional range of dynamics – reproducing both subtle
variations in level as well as dramatic loud crescendos. Our proprietary
trans-spectral wide-bandwidth output transformers contribute importantly to the
extended, “airy” highs that help distinguish the Classic Sixty from ordinary
tubed amplifiers. The Classic Sixty offers an ideal introduction to the joys of
modern tube amplifiers, while the ease of use, low maintenance costs, and
reliability will be a revelation for those who have only experienced
“entry-level” tube gear. Those who wish to take the experience a step further
will want to investigate the upgraded Classic Sixty SE, which upgrades the
output tubes to KT120s and incorporates CJD Teflon Capacitors and ultra
high-performance metal foil resistors in strategic applications in the circuit.
Either model is sure to rekindle your passion for enjoying great music in your
home. Specifications Power60 watts per channel from 30 Hz to 15 KHz at no
more than 1.5 % THD, both channels driven into 4 ohms (also available connected
for 8 or 16 ohm loads)Sensitivity0.7 V to rated powerFrequency Response (at 10
watts) 20 Hz to 20 kHz, +/- .3 dBHum and Noise96 dB below rated powerInput
Impedance100 kOhmsTube Complement1 x 6189, 2 x 6922, 4 x EL34 (Classic Sixty)4 x
KT120 (Classic Sixty SE) Dimensions 13.25D x 17.375W x 6.625H inches Weight 41
Lbs.
CONRAD JOHNSON CLASSIC
SIXTYSE
LISTINO UFFICIALE €.
7.930,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stereo a valvole KT120 60W
Edizione Speciale. Caratteristiche: Potenza: 60 watt per canale da 30 Hz a 15
KHz senza alcun THD oltre il 1,5%, entrambi i canali a 4 ohm (disponibile anche
in contatto per 8 o 16 ohm); Sensibilità: 0.7 V a potenza nominale; Risposta in
frequenza (a 10 watt): 20 Hz a 20 kHz, +/- 0,3 dB; Ronzio e rumore: 96 dB sotto
potenza nominale; Impedenza di ingresso: 100 kOhm; Valvole: 1x 6189, 2x 6922, 4x
KT120; Dimensioni: (P x L x A) 33,7 x 44,1 x 16,8 cm; Peso: 18,6 Kg.
Tasked with developing the most cost effective amplifier that we could build,
consistent with our standards of quality of construction and performance, the
conrad-johnson design team turned to our flagship product for inspiration.
Borrowing heavily on the technology of its big brother, the ART amplifier, the
Classic Sixty preserves the distinctive tonal character of individual
instruments and voices, with each clearly located within the overall acoustical
environment of the original recording. Musical transients are reproduced with
realistic impact, but without artificial enhancement. Like its more costly
siblings, the Classic Sixty captures the emotional impact of the live event,
never getting between the listener and the musical performance.There really is
no mystery to the basis for outstanding musical performance: best results come
from simple circuits executed with quality parts. The Classic Sixty amplifier
circuit design is about as simple as possible, employing just seven vacuum-tubes.
Single-ended triode voltage gain and inverter stages are coupled to an output
stage comprised of a single pair of ultra-linear operated EL34 tubes for each
channel. As it is critically important that the DC voltage supplied to the gain
stages be absolutely rock-solid stable, these voltages are provided by simple
but highly effective discrete voltage regulators. And speaking of simple,
maintenance of the Classic Sixty could hardly be easier: the owner need only
make a simple bias adjustment using the built in bias indicators when installing
fresh output tubes.The use of premium quality component parts is the other half
of our underlying design mandate. In this area as well, the Classic Sixty is a
leader in its class. Precision, metal-film resistors yield low noise performance
for greatest clarity. Polypropylene and polystyrene capacitors, chosen to
achieve a high degree of temporal accuracy, are specified for both the audio
circuits and the regulated plate voltage supplies for the input and inverter
stages. The result is an exceptional range of dynamics – reproducing both subtle
variations in level as well as dramatic loud crescendos. Our proprietary
trans-spectral wide-bandwidth output transformers contribute importantly to the
extended, "airy" highs that help distinguish the Classic Sixty from ordinary
tubed amplifiers. The Classic Sixty offers an ideal introduction to the
joys of modern tube amplifiers, while the ease of use, low maintenance costs,
and reliability will be a revelation for those who have only experienced "entry-level"
tube gear. Those who wish to take the experience a step further will want to
investigate the upgraded Classic Sixty SE, which upgrades the output tubes to
KT120s and incorporates CJD Teflon Capacitors and ultra high-performance metal
foil resistors in strategic applications in the circuit. Either model is sure to
rekindle your passion for enjoying great music in your home.The Classic Sixty
offers low maintenance costs, notable reliability and near state-of-the-art
performance at a relatively modest cost. Install one in your audio system and
prepare to rekindle your passion for enjoying great music in your home.
Specifications
for Classic Sixty and Classic Sixty SE Power: 60 watts per channel
from 30 Hz to 15 KHz at no more than 1.5 % THD, both channels driven into 4 ohms
(also available connected for 8 or 16 ohm loads) Sensitivity: 0.7 V to rated
power Frequency Response (at 10 watts): 20 Hz to 20 kHz, +/- .3 dB Hum and
Noise: 96 dB below rated power Input Impedance: 100 kOhms Tube Complement:
1 x 6189, 2 x 6922, 4 x EL34 (Classic Sixty), 4 x KT120 (Classic Sixty SE)
Dimensions: 13.25D x 17.375W x 6.625H inches Weight: 41 Lbs.
CONRAD JOHNSON
LP70S
LISTINO UFFICIALE €. 11.890,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stereo a valvole 6550 70W.
Caratteristiche: Potenza: 70 watt per canale da 30 Hz a 15 KHz a non più
del 1,5% THD o IMD, entrambi i canali a 4 ohm (disponibile anche in contatto per
8 o 16 ohm); Sensibilità: 0,5 V a potenza nominale; Risposta in frequenza (a 10
watt): 20 Hz a 20 kHz, +/- 0,25 dB; Ronzio e rumore: 102 dB sotto potenza
nominale; Impedenza di ingresso: 100 kOhm; Valvole: 3 x 6922, 6550 x 4;
dimensioni: 40,6 x 48,26 x 16,20 cm; peso: 22,7 Kg.
CONRAD JOHNSON
LP125SA
LISTINO UFFICIALE €. 13.080,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stereo a valvole KT120, 125W.
Caratteristiche: Potenza: 125 Watt per canale da 30 Hz a 15 KHz a non più del
1,5% THD o IMD, entrambi i canali guidato su 4 ohm (disponibili anche collegati
per 8 o 16 ohm); sensibilità: 1.1 Volt rms a potenza nominale; Risposta in
frequenza (a 10 watt): 20 Hz a 20 kHz, +/- 0,1 dB; Ronzio e rumore: 104 dB sotto
potenza nominale; Impedenza di ingresso: 100 kOhm; Valvole: 1x 6189, 2x 6N30P,
8x KT120; Dimensioni: (P x L x A) 48,3 x 48,3 x 18 cm; Peso: 37,2 Kg
The LP125sa Stereo Amplifier and LP260m mono-block are the latest in the highly
regarded series of conrad-johnson vacuum-tube power amplifiers. The LP125sa
offers a compelling combination of the audio excellence one expects from
conrad-johnson, the convenience of a single stereo chassis, and, at 125 watts
per channel, sufficient power for the majority of high-end speaker systems.
Those with more demanding speaker systems will want to turn to the LP260m
mono-block powerhouse, rated at 270 watts. Both amplifiers are capable of
capturing the delicate textures and subtle nuances of live music while
maintaining control with the authority that comes with ample power. Nearly
identical in both models, the audio circuit consists of three stages. The input
signal is amplified by a single-ended triode amplifier designed for wide band
width. The signal is then direct coupled to a cathode coupled phase-inverter.
This high cur rent, triode phase-inverter stage provides a bal anced, low
impedance drive to the output stage. Output power is developed by KT120 power
tubes (two pairs per channel in the LP125sa, four pairs in the LP260m), chosen
for their excellent sonic character, high power capability, and reliability. The
output tubes are operated in ultralinear configuration which offers a desir able
combination of high power and low distortion. Massive output transformers with
intricately interleaved wind ings afford extended bandpass and high phase
linearity. A small amount (about 12 dB) of loop negative feedback reduces
distortion and achieves a sufficiently high damping factor to control reactive
loudspeaker systems. Power supply design is every bit as critical to the
performance of an audio component as the audio circuit itself. Separate, low
impedance, discrete dc power supply regulators are provided for the input and
phase-inverter stages, preventing the output stage from modulating these stages
through the power supply. These amplifiers require no complicated adjustments or
specialized equipment to main tain. To assure continued peak performance, the
owner need only make a simple bias adjustment when new tubes are installed.
Built in LED bias indicators allow the user to make this adjustment using only
the supplied bias adjustment tool.
CONRAD JOHNSON
LP125SA+
LISTINO UFFICIALE €.
15.850,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stereo a valvole KT120, 125W. Caratteristiche: Potenza: 125
Watt per canale da 30 Hz a 15 KHz a non più del 1,5% THD o IMD, entrambi i
canali guidato su 4 ohm (disponibili anche collegati per 8 o 16 ohm);
sensibilità: 1.1 Volt rms a potenza nominale; Risposta in frequenza (a 10 watt):
20 Hz a 20 kHz, +/- 0,1 dB; Ronzio e rumore: 104 dB sotto potenza nominale;
Impedenza di ingresso: 100 kOhm; Valvole: 1x 6189, 2x 6N30P, 8x KT120;
Dimensioni: (P x L x A)48,3 x 48,3 x 18 cm; Peso: 37,2 Kg
CONRAD JOHNSON
ARTSA
LISTINO UFFICIALE €.
31.450,00
Per offerta e promozioni Telefona /e -mail
Amplificatore stereo a valvole 6550 135W. Caratteristiche: Potenza: 140 watt per
canale da 30 Hz a 15 KHz a non più del 1,5% THD o IMD, entrambi i canali guidato
su 4 ohm (disponibili anche collegati per 8 o 16 ohm); Sensibilità: 1.8V di
potenza; Risposta in frequenza (a 10 watt): 20 Hz a 20 kHz, +/- 0,25 dB; Ronzio
e rumore: 108 dB sotto potenza nominale; Impedenza di ingresso: 100 kOhm;
Valvole: 1 x 6189, 2 x 6N30P, 8 x KT120; Dimensioni: (P x L x A) 47,6 x 48,3 x
18,1 cm; Peso: 37,2 Kg.
ART
Amplifier The limited edition ART Amplifier is designed to be a reference
amplifier for the use of industry professionals as well as dedicated audiophiles.
Like its companion GAT Preamplifier, the ART Amplifier will be offered in an
edition of just 250 units (125 pairs) to be sold through selected conrad-johnson
dealers and distributors. Those who do not need the prodigious 275 watt power
delivered by the mighty ART mono-blocks will want to consider the ARTsa Stereo
Amplifier. Nearly identical cosmetically (one more tube in the front), it is
exactly an ART amplifier divided into two channels, each producing a solid 140
watts. At conrad-johnson, our approach to circuit design is predicated on the
principle that the surest path to both state-of-the-art musicality and
exceptional reliability is simple circuits constructed of the finest available
parts. These ART amplifiers exemplify this basic principle. The audio circuit
has just three elements, each as simple as possible, and each essential to the
operation of the amplifier. A voltage gain amplifier (a single triode) is
direct-coupled to a cathode coupled phase inverter (each phase handled by a
single triode), which in turn drives the output stage. For the ART mono-blocks,
four pairs of KT120 output tubes, chosen for their musical accuracy, high power,
and reliability, endow this amplifier with a muscular 275 watt output rating.
For the ARTsa, two pairs of KT120 output tubes in each channel produce 140 watts
of power per channel. A small amount (about 12 dB) of loop negative feedback
reduces distortion and achieves a sufficiently high damping factor to control
the reactive load typically presented by high-performance loudspeaker systems.
To assure continued peak performance, the owner need only make a simple bias
adjustment when new tubes are installed. Built in LED bias indicators allow the
user to make this adjustment using only the supplied screwdriver. Separate, low
impedance, discrete dc power supply regulators are provided for the input and
phase-inverter stages, thoroughly isolating these stages from the power demands
of the output stage. These power supplies are designed to maintain a rock solid
supply at all audio frequencies. Component parts contribute importantly to the
sonic performance of any circuit design. The ART amplifiers maintain the
exacting quality standards for which conrad-johnson is internationally known.
Resistors are precision laser-trimmed metal foil types. Coupling capacitors are
the new Teflon CJD caps, while the power supplies use large value polypropylene
capacitors in parallel with CJD Teflons. There are no electrolytic capacitors in
the audio circuits or in the related power supplies. Proprietary wide-bandwidth
output transformers contribute to excellent high frequency performance. Even the
machined gold plated OFC connectors and the internal wiring have been carefully
selected for optimal sonic performance. Attention to every detail enable us to
extract the full potential from our circuit designs and ensures that our
products will perform to this potential for years to come. The ART and ARTsa
amplifiers are built without compromise to achieve a new standard in musical
performance, and they are built to last. Power: ARTsa Amplifier 140 watts per
channel from 30 Hz to 15 KHz at no more than 1.5 % THD or IMD, both channels
driven into 4 ohms (also available connected for 8 or 16 ohm loads) Sensitivity
1.8V to rated power Frequency Response (at 10 watts): 20 Hz to 20 kHz, +/- .25
dB Frequency Response (at 10 watts) 20 Hz to 20 kHz, +/- .25 dB Hum and Noise
108 dB below rated power Input Impedance 100 kOhms
Tube Complement ARTsa – 1 x 6189, 2 x 6N30P, 8 x KT120 ARTsa – 82 Lbs.Dimensions
18.75D x 19W x 7.13H inches
FINALI VALVOLARI MONO
CONRAD JOHNSON
LP260M
LISTINO UFFICIALE €. 26.130,00
Per offerta e promozioni Telefona /e -mail
Amplificatore mono
a valvole KT120, 270W. Caratteristiche: Potenza: 270 watt da 30 Hz a 15 KHz a
non più del 1,5% THD o IMD, guidati su 4 ohm (disponibile anche in contatto per
8 o 16 ohm); 1.8 Volt rms a potenza nominale; Risposta in frequenza (a 10 watt):
20 Hz a 20 kHz, +/- 0,1 dB; Ronzio e rumore: 104 dB sotto potenza nominale;
Impedenza di ingresso: 100 kOhm; Valvole: 1x M8080, 1x 6N30P, 8x KT120;
Dimensioni: (P x L x A) 48,3 x 48,3 x 18 cm; Peso: 37,7 Kg
LP260m mono-block are the latest in the highly regarded series of conrad-johnson
vacuum-tube power amplifiers. The LP125sa offers a compelling combination of the
audio excellence one expects from conrad-johnson, the convenience of a single
stereo chassis, and, at 125 watts per channel, sufficient power for the majority
of high-end speaker systems. Those with more demanding speaker systems will want
to turn to the LP260m mono-block powerhouse, rated at 270 watts. Both amplifiers
are capable of capturing the delicate textures and subtle nuances of live music
while maintaining control with the authority that comes with ample power. Nearly
identical in both models, the audio circuit consists of three stages. The input
signal is amplified by a single-ended triode amplifier designed for wide band
width. The signal is then direct coupled to a cathode coupled phase-inverter.
This high cur rent, triode phase-inverter stage provides a bal anced, low
impedance drive to the output stage. Output power is developed by KT120 power
tubes (two pairs per channel in the LP125sa, four pairs in the LP260m), chosen
for their excellent sonic character, high power capability, and reliability. The
output tubes are operated in ultralinear configuration which offers a desir able
combination of high power and low distortion. Massive output transformers with
intricately interleaved wind ings afford extended bandpass and high phase
linearity. A small amount (about 12 dB) of loop negative feedback reduces
distortion and achieves a sufficiently high damping factor to control reactive
loudspeaker systems. Power supply design is every bit as critical to the
performance of an audio component as the audio circuit itself. Separate, low
impedance, discrete dc power supply regulators are provided for the input and
phase-inverter stages, preventing the output stage from modulating these stages
through the power supply. These amplifiers require no complicated adjustments or
specialized equipment to main tain. To assure continued peak performance, the
owner need only make a simple bias adjustment when new tubes are installed.
Built in LED bias indicators allow the user to make this adjustment using only
the supplied bias adjustment tool.Specifications: Power: LP125sa - 125 Watts
per channel from 30 Hz to 15 KHz at no more than 1.5 % THD or IMD, both channels
driven into 4 ohms (also available connected for 8 or 16 ohm loads) LP260m - 270
Watts from 30 Hz to 15 KHz at no more than 1.5 % THD or IMD, driven into 4 ohms
(also available connected for 8 or 16 ohm loads) Sensitivity: LP125sa -
1.1 Volt rms to rated power LP260m - 1.8 Volt rms to rated power
Frequency Response (at 10 watts):20 Hz to 20 kHz, +/- .1 dB Hum and Noise:
104 dB below rated power Input Impedance: 100 kOhms Tube Complement:
LP125sa - 1 6189, 2 6N30P, 8 KT120 LP260m – 1 M8080, 1 6N30P, 8 KT120
Dimensions: 19D x 19W x 7.1H inches Weight: LP125sa - 82 lb LP260m –
83 l b
CONRAD JOHNSON
LP260MSE
LISTINO UFFICIALE €.
30.890,00
Per offerta e promozioni Telefona /e -mail
Amplificatore mono a valvole KT120, 270W Edizione Speciale. Caratteristiche:
Potenza: 270 watt da 30 Hz a 15 KHz a non più del 1,5% THD o IMD, guidati su 4
ohm (disponibile anche in contatto per 8 o 16 ohm); 1.8 Volt rms a potenza
nominale; Risposta in frequenza (a 10 watt): 20 Hz a 20 kHz, +/- 0,1 dB; Ronzio
e rumore: 104 dB sotto potenza nominale; Impedenza di ingresso: 100 kOhm;
Valvole: 1x M8080, 1x 6N30P, 8x KT120; Dimensioni: (P x L x A) 48,3 x 48,3 x 18
cm; Peso: 37,7 Kg
LP260m mono-block are the latest in the highly regarded series of conrad-johnson
vacuum-tube power amplifiers. The LP125sa offers a compelling combination of the
audio excellence one expects from conrad-johnson, the convenience of a single
stereo chassis, and, at 125 watts per channel, sufficient power for the majority
of high-end speaker systems. Those with more demanding speaker systems will want
to turn to the LP260m mono-block powerhouse, rated at 270 watts. Both amplifiers
are capable of capturing the delicate textures and subtle nuances of live music
while maintaining control with the authority that comes with ample power. Nearly
identical in both models, the audio circuit consists of three stages. The input
signal is amplified by a single-ended triode amplifier designed for wide band
width. The signal is then direct coupled to a cathode coupled phase-inverter.
This high cur rent, triode phase-inverter stage provides a bal anced, low
impedance drive to the output stage. Output power is developed by KT120 power
tubes (two pairs per channel in the LP125sa, four pairs in the LP260m), chosen
for their excellent sonic character, high power capability, and reliability. The
output tubes are operated in ultralinear configuration which offers a desir able
combination of high power and low distortion. Massive output transformers with
intricately interleaved wind ings afford extended bandpass and high phase
linearity. A small amount (about 12 dB) of loop negative feedback reduces
distortion and achieves a sufficiently high damping factor to control reactive
loudspeaker systems. Power supply design is every bit as critical to the
performance of an audio component as the audio circuit itself. Separate, low
impedance, discrete dc power supply regulators are provided for the input and
phase-inverter stages, preventing the output stage from modulating these stages
through the power supply. These amplifiers require no complicated adjustments or
specialized equipment to main tain. To assure continued peak performance, the
owner need only make a simple bias adjustment when new tubes are installed.
Built in LED bias indicators allow the user to make this adjustment using only
the supplied bias adjustment tool.Specifications: Power: LP125sa - 125 Watts
per channel from 30 Hz to 15 KHz at no more than 1.5 % THD or IMD, both channels
driven into 4 ohms (also available connected for 8 or 16 ohm loads) LP260m - 270
Watts from 30 Hz to 15 KHz at no more than 1.5 % THD or IMD, driven into 4 ohms
(also available connected for 8 or 16 ohm loads) Sensitivity: LP125sa -
1.1 Volt rms to rated power LP260m - 1.8 Volt rms to rated power
Frequency Response (at 10 watts):20 Hz to 20 kHz, +/- .1 dB Hum and Noise:
104 dB below rated power Input Impedance: 100 kOhms Tube Complement:
LP125sa - 1 6189, 2 6N30P, 8 KT120 LP260m – 1 M8080, 1 6N30P, 8 KT120
Dimensions: 19D x 19W x 7.1H inches Weight: LP125sa - 82 lb LP260m –
83 l b
CONRAD JOHNSON
ART MONO
LISTINO UFFICIALE €. 61.800,00
Per offerta e promozioni Telefona /e -mail
Amplificatori mono a valvole KT120 275W.
Caratteristiche: Potenza: 275 watt da 30 Hz a 15 KHz a non più del 0,5% THD o
IMD 4 ohm (disponibili anche collegati per 8 o 16 ohm); Sensibilità: 1.8V di
potenza Frequenza di risposta (a 10 watt): 20 Hz a 20 kHz, +/- 0,25 dB; Risposta
in frequenza (a 10 watt): 20 Hz a 20 kHz, +/- 0,25 dB; Ronzio e rumore: 108 dB
sotto potenza nominale; Impedenza di ingresso: 100 kOhm; Valvole: 1 x M8080, 1 x
6N30P, 8 x KT120; Dimensioni: (P x L x A) 47,6 x 48,3 x 18,1 cm; Peso: 37,7 Kg.
The limited edition ART Amplifier is designed to be a reference amplifier for
the use of industry professionals as well as dedicated audiophiles. Like its
companion GAT Preamplifier, the ART Amplifier will be offered in an edition of
just 250 units (125 pairs) to be sold through selected conrad-johnson dealers
and distributors. Those who do not need the prodigious 275 watt power delivered
by the mighty ART mono-blocks will want to consider the ARTsa Stereo Amplifier.
Nearly identical cosmetically (one more tube in the front), it is exactly an ART
amplifier divided into two channels, each producing a solid 140 watts.At
conrad-johnson, our approach to circuit design is predicated on the principle
that the surest path to both state-of-the-art musicality and exceptional
reliability is simple circuits constructed of the finest available parts. These
ART amplifiers exemplify this basic principle. The audio circuit has just three
elements, each as simple as possible, and each essential to the operation of the
amplifier. A voltage gain amplifier (a single triode) is direct-coupled to a
cathode coupled phase inverter (each phase handled by a single triode), which in
turn drives the output stage. For the ART mono-blocks, four pairs of KT120
output tubes, chosen for their musical accuracy, high power, and reliability,
endow this amplifier with a muscular 275 watt output rating. For the ARTsa, two
pairs of KT120 output tubes in each channel produce 140 watts of power per
channel. A small amount (about 12 dB) of loop negative feedback reduces
distortion and achieves a sufficiently high damping factor to control the
reactive load typically presented by high-performance loudspeaker systems. To
assure continued peak performance, the owner need only make a simple bias
adjustment when new tubes are installed. Built in LED bias indicators allow the
user to make this adjustment using only the supplied screwdriver.Separate, low
impedance, discrete dc power supply regulators are provided for the input and
phase-inverter stages, thoroughly isolating these stages from the power demands
of the output stage. These power supplies are designed to maintain a rock solid
supply at all audio frequencies.LP140M Vacuum-Tube Power Amplifier
Component parts contribute importantly to the sonic performance of any circuit
design. The ART amplifiers maintain the exacting quality standards for which
conrad-johnson is internationally known. Resistors are precision laser-trimmed
metal foil types. Coupling capacitors are the new Teflon CJD caps, while the
power supplies use large value polypropylene capacitors in parallel with CJD
Teflons. There are no electrolytic capacitors in the audio circuits or in the
related power supplies. Proprietary wide-bandwidth output transformers
contribute to excellent high frequency performance. Even the machined gold
plated OFC connectors and the internal wiring have been carefully selected for
optimal sonic performance. Attention to every detail enable us to extract the
full potential from our circuit designs and ensures that our products will
perform to this potential for years to come. The ART and ARTsa amplifiers are
built without compromise to achieve a new standard in musical performance, and
they are built to last.Visit a conrad-johnson dealer soon to hear for yourself
just how true to the music an amplifier can be.Specifications:
Power: ART Amplifier - 275 watts from 30 Hz to 15 KHz at no more than .5 %
THD or IMD into 4 ohms (also available connected for 8 or 16 ohm loads)
ARTsa Amplifier – 140 watts per channel from 30 Hz to 15 KHz at no more than 1.5
% THD or IMD, both channels driven into 4 ohms (also available connected for 8
or 16 ohm loads) Sensitivity: 1.8V to rated power Frequency Response (at 10
watts): 20 Hz to 20 kHz, +/- .25 dB Frequency Response (at 10 watts): 20 Hz to
20 kHz, +/- .25 dB Hum and Noise: 108 dB below rated power Input Impedance: 100
kOhmsTube Complement: ART - 1 x M8080, 1 x 6N30P, 8 x KT120 ARTsa –
1 x 6189, 2 x 6N30P, 8 x KT120 Dimensions: 18.75D x 19W x 7.13H inches Weight:
ART - 83 Lbs. ARTsa – 82 Lbs.
Legenda istruzioni
Clicca
per qui per vedere : FOTO PRODOTTO
 Clicca
per qui per vedere : ISTRUZIONI PRODOTTO
Clicca
per qui per vedere : CATALOGO,PROVA RIVISTE SPECIALIZZATE PRODOTTO
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