KRELL

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KRELL K300i Listino ufficiale €. 10.990,00

Integrato stato solido RCA/XLR con telecomando (150W/ch 8 Ohm)K-300i Modulo Digitale Modulo digitale Usb,HDMI,Coax,Ottico,Ethernet,Bluetooth,Streaming € 1.400,00

K-300i Integrated Stereo Amplifier The K-300i incorporates a newly developed amplifier circuit design with Krell iBias™ technology that delivers 150 Watts/Channel into 8Ω and 300 Watts/Channel into 4Ω. iBias provides the sonic benefits of Class A operation without the excessive heat and power consumption of traditional Class A designs. A 771VA transformer with 80,000μF of capacitance forms a potent power supply for excellent signal control and dynamics. Krell Current Mode topology is employed with fully differential circuitry that runs from the input stage through to the last output gain stage providing an extremely linear and extended frequency response curve with smooth, effortless highs and extremely dynamic bass energy. Packed with many of Krell's most musical-sounding technologies, the elegant chassis is living-room-friendly. Yet it has enough power to achieve incredible, lifelike dynamics with any speaker. The front-panel menu system provides configuration features such as input trim. Theater Throughput mode lets the K-300i serve as the core of a surround-sound system without sacrificing two-channel sound quality. Analog Inputs include three stereo RCA and two stereo balanced XLR. High-quality gold-plated speaker cable terminals provide a secure, electrically ideal connection. The K-300i also offers features that make it perfect for custom installation, such as RS-232 and Ethernet ports for control and status feedback, 3.5mm jacks for IR input, and 12-volt trigger input and output. Additionally, the unit has an internal web server that is optimized for tablets and provides a remote graphical user interface for convenient and intuitive control accessed through its Ethernet connection. With the digital option installed the K-300i becomes a world class DAC with the connectivity and features to support the latest digital music formats. An ESS Sabre Pro DAC configured for high current output performs the digital to analog signal conversion for uncompromised reproduction of digital music. A network streaming audio renderer with dedicated mobile App plays AAC, ALAC, AIFF, FLAC, WAV, WMA, and DoP files up to 192kHz/24-bit from UPnP music servers or NAS devices. The digital option with the mconnect Control app (available in iOS and Android versions) also provides Spotify*, vTuner Internet radio, Tidal*, Deezer*, and QoBuz* streaming services, is Roon Ready* and decodes MQA. HDMI 2.0 inputs and output supporting 4K UHD with HDR are available for TV viewing with audiophile grade sound quality. A single USB host port is available on the front panel to play music from USB flash memory sticks and a USB device port is positioned on the rear panel for streaming music directly from a computer. The digital option also includes a Bluetooth receiver featuring Qualcomm® aptX™ audio technology for the best sound quality when connected to aptX enabled Bluetooth devices. *A subscription is required for these services. Updating the digital module software may also be necessary depending on the vintage of the unit (see the download area at the bottom of the page). **Krell highly recommends that users of the mconnect Control app update to the latest version of the app (v2.4.1 or higher for Apple devices and v2.3.7 or higher for Android devices). This fixes a potential issue where getting a phone call while using the phone to play music to the Digital Vanguard or Vanguard DAC could result in a large increase in volume level. Keeping the mconnect Control app up-to-date also ensures access to any new features and performance improvements. Qualcomm aptX is a product of Qualcomm Technologies International, Ltd.
Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries, used with permission. aptX is a trademark of Qualcomm Technologies International, Ltd., registered in the United States and other countries, used with permission. The Spotify Software is subject to third
The MQA logo is a trademark of MQA Limited. © MQA Limited 2018 K-300i Specifications Analog Inputs 2 pr. balanced via XLR connectors 3 pr. single-ended via RCA connectors Digital Inputs 1 EIAJ Toslink Optical 1 S/PDIF Coax 2 HDMI (HDMI 2.0a, HDCP 2.2) + 1 HDMI Output 1 USB-A (USB 2.0 host) 1 USB-B (USB 2.0 audio device) 1 Bluetooth with aptX Outputs 1 pr. preamp outputs via RCA connectors 1 pr. speaker outputs via gold-plated binding posts Control inputs 1 RS-232 input via 9-pin D-subminiature connector 1 remote IR detector input via 3-conductor 3.5 mm connector 1 12 VDC trigger input via 2-conductor 3.5 mm connector Control output 1 12 VDC trigger output (60 mA maximum current) via 2-conductor 3.5 mm connector Input impedance Balanced: 16 kΩ Single-ended: 8 kΩ Frequency response 20 Hz to 20 kHz +0, -0.22 dB<10Hz to 100kHz +0, -0.57 dB Signal-to-noise ratio >104 dB, wideband, unweighted, at 2V RMS in balanced, referred to full power output >117 dB, “A”-weighted Gain 25 dB, referenced to 2V RMS in balanced and full power output Input Overload 10.4 V RMS Balanced 6.8 V RMS Single-ended Total harmonic distortion <0.015%, 1 kHz, 150 W, 8 Ω load <0.08%, 20 kHz, 150 W, 8 Ω load Output power 150 W RMS per channel at 8 Ω 300 W RMS per channel at 4 Ω Output voltage 98 V peak to peak 34.6 V RMS Slew rate 46 V/µs Output impedance <0.023 Ω, 20 Hz <0.035 Ω, 20 Hz to 20 kHz Damping factor >347, 20 Hz, referred to 8 Ω >228, 20 Hz to 20 kHz, referred to 8 Ω Power consumption Standby: 11 W Idle: 46 W Maximum: 900 W Heat output Standby: 37 BTU/hr Idle: 156 BTU/hr Maximum: 3060 BTU/h Dimensions 17.25 in W x 4.12 in H x 18.00 in D 438 mm W x 105 mm H x 457 mm D Weight Unit only: 52 lb [23.6 kg] As shipped: 60 lb [27.3 kg] Digital Module Specs Coaxial and HDMI inputs support PCM up to 24-bit/192kHz. Optical input up to 24-bit/96kHz HDMI inputs support DSD and 4K video content. HDMI output supports Audio Return Channel (ARC) USB and Network streaming support MP3, AAC, WMA, WAV(PCM), FLAC, ALAC up to 192kHz Bluetooth streaming supports A2DP, AVRCP, HFP, HSP

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KRELL VANGUARD DAC Listino ufficiale €. 8.600,00

Stream-Player di rete 192kHz 24 bit ed internet radio UPnP/DLNA, iOS remote
Connect Stream Player The Krell Connect, the ultimate in high-resolution audio streaming technology. From FLAC to WAV, MP3 and WMA, the Connect plays back up to 192kHz/24-bit audio plus Internet radio, all to Krell's highest fidelity standards. The Wi-Fi equipped Connect is available in two forms: digital only, or with a built-in Digital-to-Analog Converter (DAC) module. The DAC-equipped Connect has a 32-bit ESS Sabre chipset with discrete, direct-coupled analog circuitry outputting via RCA or balanced audio outputs. The digital-only version has both coax and Toslink optical outputs. Extensive audio libraries are easy to navigate via the Connect's built-in 3.5-inch QVGA LCD screen. Alternately, full-featured iOS and Android apps offer full control from anywhere in the home. In addition to playback of FLAC and WAV files up to 192kHz/24-bit, the Connect also streams Ogg, WMA, and MP3. Unlike some music streamers, gapless playback is possible, allowing for no breaks between album tracks. Live concert albums, for example, can be played as a seamless, uninterrupted experience Internet radio gets the same conversion as the high-resolution files (on DAC-equipped models), providing the best possible sound quality from on line streaming content.Up to 192kHz/24-bit playback 3.5-inch QVGA (320x240) LCD Display Internet Radio UPnP/DLNA-compliant iOS and Android apps for control. IR Remote optional. V-Tuner equipped Wi-Fi and USB, plus Toslink optical and coax digital inputs (DAC model only) Rack Mountable Optional 32-bit ESS Sabre DAC features 192k/24-bit playback, with Krell fully discrete, balanced, Current mode analog circuitry DAC model features RCA and Balanced outputs. Supported Formats: FLAC, Ogg, WAV, WMA, Apple Lossless, MP-4a, MP3

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KRELL ILLUSION ll Listino ufficiale €. 12.200,00

Pre Linea a stato solido in classe A monotelaio con amplificatore cuffie e DAC

Illusion II Preamplifier The Illusion II is the perfect centerpiece for a world class digital and analog audio system. Added to the normal selection of balanced and single- ended inputs are five digital inputs. The digital module features AES/EBU, coaxial, and optical digital inputs for use with streaming devices or other digital sources. Circuitry Highlights The Illusion II preamplifier is a dual monaural design with the left and right channels afforded their own power supply regulation and individual circuit boards. All signal gain is executed with surface mount technology using proprietary multiple-output current mirrors with nearly 500 times the open loop linearity of other designs. Featuring 700 kHz bandwidth in a zero feedback, balanced, Krell Current Mode design, the Illusion II shares the same design philosophy as its bigger brother, the flagship Illusion preamplifier. Negative feedback is not used anywhere in the preamp, nor is it necessary. Open-loop distortion is typically less than 0.003%. The volume control is realized with a balanced resistor ladder - bandwidth and transient response of the preamp circuitry are virtually unaffected by the volume setting. The headphone circuitry is identical to the main circuitry, offering private listening with the same performance as speaker playback. Digital Module Highlights The digital module supports up to 24 bit/192kHz LPCM. All digital signals are fed to an ESS Sabre DAC and then sent to Krell’s Current Mode, discrete, balanced analog circuitry. Power Supply Highlights Oversized for a preamplifier, the power supply features a 95 VA transformer and 40,000 µF of capacitance giving it the ability to respond quickly to musical demands. The large power supply improves noise rejection and renders the Illusion II impervious to all but the most severe AC voltage power fluctuations. A new eco-friendly standby mode reduces power consumption to 2W. Illusion II Preamplifier Specifications Analog Inputs •2 pr. balanced via XLR connectors •3 pr. singleended via RCA connectors Digital Inputs •1 AES/EBU via XLR connector •2 coaxial via RCA connectors •2 optical via Toslink connectors Main outputs •1 balanced via XLR connectors •1 pr. single]ended via RCA connectors Download the "Quick Set-up Guide" Headphone output •1 via 3-conductor 6.35 mm (1/4 inch) connector Control inputs •1 RS-232 input via a 9-pin D-subminiature connector •1 remote IR detector input via a 3-conductor 3.5 mm connector •1 12 VDC trigger input via 2-conductor 3.5 mm connector Control outputs •2 individually programmable 12 VDC trigger outputs via 2-conductor 3.5mm connectors (30 mA maximum per output) Dimensions Preamplifier only: •17.3 in.W x 3.8 in. H x 18.3 in. D •43.8 em W x 9.7 em H x 46.4 em D Weight •Shipped: 38 lbs., 17.2 kg •Preamplifier only: 23 lbs., 10.4 kg

KRELL ILLUSION Listino ufficiale €. 24.700,00

Pre Linea a stato solido in classe A, tecnologia cast e alimentazione separata Scheda crossover opzionale per Preamplificatore Illusion +€. 3.900,00
Illusion Preamplifier The Illusion preamplifier extends the Krell tradition of separating the power supply from the audio circuitry in our flagship preamplifiers. Sharing the new Class A iBias power amplifier aesthetic and featuring Krell CAST technology, the Illusion preamplifier is the ideal match for the new Solo 375 and Solo 575 power amplifiers. The optional crossover functionality offers the ability to use a subwoofer/satellite speaker arrangement and still maintain the highest quality sonic performance. Previous to the Illusion preamplifier, this system configuration would require signals to pass through a subwoofer’s lower quality crossover circuitry. The Illusion preamplifier is the centerpiece of a world class audio system where space is at a premium Crossover Highlights Owing to Krell’s work in the Modulari Duo Reference loudspeaker, the unique crossover feature is a highly sophisticated option. When the optional board is present, additional crossover menu items become available. Definable parameters include independently assignable crossover frequencies and filter types for the high and low pass sections. Choices include 40Hz, 55Hz, 75Hz, and 100Hz crossover points with 12dB, 24dB, and 48dB Butterworth or 24dB Linkwitz-Riley style filters. The high pass section of the crossover uses the full Illusion preamplifier circuitry for its output stage.Circuitry Highlights
The Illusion preamplifier is a dual monaural circuit design with the left and right channels afforded their own power supply regulation and individual full chassis sized boards. All signal gain is realized in surface mount topology using proprietary multiple-output current mirrors with nearly 500 times the open loop linearity of other designs 1.5 MHz open loop bandwidth in a zero feedback, balanced, Krell Current Mode design terminating in Krell CAST. A complete Krell system (source, preamp, and amplifier) system, connected using CAST interconnects reduces the number of voltage gain stages to the minimum, one. The resulting noise floor approaches the theoretical limit of technology. Negative feedback is not used anywhere in the preamp, nor is it necessary. Open-loop distortion is typically less than 0.003%. The volume control is realized with a balanced resistor ladder — bandwidth and transient response of the preamp circuitry are virtually unaffected by the volume setting. Power Supply Highlights The Illusion audio circuits receive power from a Krell Current Mode analog power supply housed in its own dedicated chassis. The power supply avoids the common integrated circuit topology used in many preamplifiers and instead mimics the design topology of Krell Evolution e Series amplifiers. The circuitry is completely discrete giving it the ability to respond quickly to current demands and also be unaffected by all but the most severe AC voltage power fluctuations. Oversized for a preamplifier, the power supply features a 290 VA transformer and 41,600µF of capacitance. Locating the power supply in its own chassis presents the ideal configuration for isolating stray electrical and magnetic interference from the critical preamplifier signal path. Capable of delivering current and voltage swing for any musical event, the Illusion power supply is gentle on AC requirements when not in use. A new eco-friendly design reduces standby power draw to 2W Illusion Preamplifier
Specifications Inputs •2 pr. CAST via 4-pin bayonet connectors •2 pr. balanced via XLR connectors •3 pr. single-ended via RCA connectors Tape input •1 pr. single-ended via RCA connector Main outputs •2 pr. CAST via 4-pin bayonet connectors •1 pr. balanced via XLR connector •1 pr. single-ended via RCA connector Download the "Quick Set-up Guide" Subwoofer outputs •1 pr. balanced via XLR connector •1 pr. single-ended via RCA connector Tape outputs •1 pr. single-ended via RCA connector,buffered Control inputs •1 RS-232 input via a 9-pin D-subminiature connector •1 remote IR detector input via a 3-conductor 3.5 mm connector •1 12 VDC trigger input via 3.5 mm connector •1 preamplifier link via an RJ-45 connector Dimensions Preamplifier only: •17.3 in.W x 3.8 in. H x 18.3 in. D •43.8 em W x 9.7 em H x 46.4 em D Power supply only: •17.3 in. W x 3.8 in. H x 17.7 in. D •43.8 em W x 9.7 em H x 44.8 em D Preamplifier and power supply: •17.3 in. W x 7.6 in. H x 18.3 in. D •43.8 em W x 19.2 em H x 46.4 em D Weight •Shipped: 61 lbs., 27.6 kg •Preamplifier only: 18 lbs., 8.1 kg •Power supply only: 28 lbs., 12.7 kg

KRELL ILLUSION CROSSOVER Listino ufficiale €. 3.900,00

Scheda crossover opzionale per Preamplificatore Illusion

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KRELL DUO 125 XD Listino ufficiale €. 9.500,00

Finale stereo a stato solido in classe A pura tecnologia iBias (125W/ch 8 Ohm)

Duo 125 XD 2 Channel Power Amplifier 125 Watt Amplifier Featuring Krell iBias Technology Frequency response 20 Hz to 20 kHz +0, -0.08 dB 0.5 Hz to 100 kHz +0, -3 dB Signal-to-noise ratio >95 dB, wideband, unweighted, referred to full power output >112 dB, "A"-weighted Gain 25.8 dB Total harmonic distortion <0.03% at 1 kHz, at 125 W, 8 Ω <0.17% at 20 kHz, at 125 W, 8 Ω Input Impedance Single-ended: 100 kΩ Balanced: 200 kΩ Input sensitivity Single-ended or balanced: 1.63 V RMS Output power 125 W RMS at 8 Ω 250 W RMS at 4 Ω Output voltage 89.4 V peak-to-peak 31.6 V RMS Output current 18 A peak Slew rate 40 V/μs Output impedance <0.015Ω, 20 Hz to 20 kHz Damping factor >530, 20 Hz to 20 kHz, referred to 8 Ω Power consumption Standby: 1 W Idle: 58 W Maximum: 1350 W Heat output Standby: 3.42 BTU/hr. Idle: 198 BTU/hr. Maximum: 4617 BTU/hr. Inputs 2 single-ended via RCA connector 2 balanced via XLR connector Outputs 2 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10in. D 434 mm W x 194 mm H x 536mm D Weight 60 lbs., 27.3 kg (shipping) 50 lbs., 22.7 kg (unit only)

KRELL DUO 175 XD Listino ufficiale €. 12.500,00

Finale stereo a stato solido in classe A pura tecnologia iBias (175W/ch 8 Ohm)

Stereo Amplifiers Krell Class A iBias Technology Krell's history is rich with breakthrough Class A amplifiers that have helped build the Krell legacy of offering the best sounding amplifiers available. Audiophiles have always considered Class A technology to be the best sounding operating state for amplifiers. However, despite Class A's unrivaled sound quality, it has fallen out of fashion because of recent demands to reduce power consumption and heat in home electronics products. Krell engineering took this challenge and redefined the meaning of high performance power amplifier. Our goal - unmatched performance, elegant design, and a compelling array of features. The breakthrough - a patent pending circuit delivering Class A operation without the excessive heat and wasted energy of conventional designs, housed in a striking new form factor, with network connectivity for advanced access and monitoring. The sound is open and unconstrained, in a manner that rivals live performance and the true sound of voices and instruments. Music and dialogue are reproduced with a richness, detail, and startling dynamics that fill a room. Plainly stated, Class A designs are the most musically accurate circuit topology available. Class A amplifiers do not suffer from the inherent distortions that all Class AB amplifiers experience. In a traditional Class A design, the output transistors conduct full current at all times regardless of the actual demand from the speakers. Often, only a fraction of this power is needed to reproduce an audio signal at normal listening levels. The rest of the power is dissipated through the amplifier’s heat sinks, producing large amounts of wasted heat. With Krell's iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krell's iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. Previous efforts at using a "tracking" bias, while effective, only measured the incoming signal and set bias levels from this information. Our new patent pending iBias technology significantly elevates the effectiveness of previous designs by calculating bias from the output stage. This seemingly small change in topology results in a dramatic improvement in sound quality, especially midrange richness and purity. The core of the technology is an innovative, patent pending design for a dynamic intelligent bias circuit. Our iBias Class A circuit directly measures the output current of the amplifier and adjusts the bias to the optimum level. Because iBias Class A measures the output current, the real time demands of the specific speaker connected to the amp are directly incorporated into the circuit function. In addition, iBias Class A even reduces the bias when the signal is at very low levels, making its operation undetectable by ear and even by standard amplifier measurements. In sliding bias schemes, the circuit merely estimates how much bias is needed based on the input signal and an "assumed speaker load." Duo 175 2 Channel Power Amplifier 175 Watt Amplifier Featuring Krell iBias Technology Frequency response 20 Hz to 20 kHz +0, -0.08 dB 0.5 Hz to 100 kHz +0, -3 dB Signal-to-noise ratio >95 dB, wideband, unweighted, referred to full power output >115 dB, "A"-weighted Gain 26.2 dB Total harmonic distortion <0.03% at 1 kHz, at 175 W, 8 Ω <0.13% at 20 kHz, at 175 W, 8 Ω Input Impedance Single-ended: 100 k #x3A9; Balanced: 200 k #x3A9; Input sensitivity Single-ended or balanced: 1.84 V RMS Output power 175 W RMS at 8 Ω 350 W RMS at 4 Ω Output voltage 106 V peak-to-peak 37 V RMS Output current 13 A peak Slew rate 40 V/s Output impedance<0.038 , 20 Hz to 20 kHz Damping factor >210, 20 Hz to 20 kHz, referred to 8 Power consumption Standby: 1 W Idle: 73 W Maximum: 1500 W Heat output Standby: 3.42 BTU/hr. Idle: 250 BTU/hr. Maximum: 5137 BTU/hr. Inputs 2 single-ended via RCA connector 2 balanced via XLR connector Outputs 2 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10in. D 434 mm W x 194 mm H x 536mm D Weight 70 lbs., 31.8 kg (shipping) 60 lbs., 27.3 kg (unit only)

KRELL DUO 300 XD Listino ufficiale €. 15.600,00

Finale stereo a stato solido in classe A pura tecnologia iBias (300W/ch 8 Ohm)

Stereo Amplifiers Krell Class A iBias Technology Krell's history is rich with breakthrough Class A amplifiers that have helped build the Krell legacy of offering the best sounding amplifiers available. Audiophiles have always considered Class A technology to be the best sounding operating state for amplifiers. However, despite Class A's unrivaled sound quality, it has fallen out of fashion because of recent demands to reduce power consumption and heat in home electronics products. Krell engineering took this challenge and redefined the meaning of high performance power amplifier. Our goal - unmatched performance, elegant design, and a compelling array of features. The breakthrough - a patent pending circuit delivering Class A operation without the excessive heat and wasted energy of conventional designs, housed in a striking new form factor, with network connectivity for advanced access and monitoring. The sound is open and unconstrained, in a manner that rivals live performance and the true sound of voices and instruments. Music and dialogue are reproduced with a richness, detail, and startling dynamics that fill a room. Plainly stated, Class A designs are the most musically accurate circuit topology available. Class A amplifiers do not suffer from the inherent distortions that all Class AB amplifiers experience. In a traditional Class A design, the output transistors conduct full current at all times regardless of the actual demand from the speakers. Often, only a fraction of this power is needed to reproduce an audio signal at normal listening levels. The rest of the power is dissipated through the amplifier’s heat sinks, producing large amounts of wasted heat. With Krell's iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krell's iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. Previous efforts at using a "tracking" bias, while effective, only measured the incoming signal and set bias levels from this information. Our new patent pending iBias technology significantly elevates the effectiveness of previous designs by calculating bias from the output stage. This seemingly small change in topology results in a dramatic improvement in sound quality, especially midrange richness and purity. The core of the technology is an innovative, patent pending design for a dynamic intelligent bias circuit. Our iBias Class A circuit directly measures the output current of the amplifier and adjusts the bias to the optimum level. Because iBias Class A measures the output current, the real time demands of the specific speaker connected to the amp are directly incorporated into the circuit function. In addition, iBias Class A even reduces the bias when the signal is at very low levels, making its operation undetectable by ear and even by standard amplifier measurements. In sliding bias schemes, the circuit merely estimates how much bias is needed based on the input signal and an "assumed speaker load." Inputs•1 RJ 45 Ethernet Port•1 12V Trigger Input•WBT Speaker Binding Posts•Optional Rack Mount Kit •17 W, 7 H, 21 D in •43.3 W, 17.7 H, 53.1 D cm •Weight: 70 lbs, 32kg

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KRELL SOLO 375 XD Listino ufficiale €. 14.300,00

Finale mono a stato solido in classe A pura tecnologia iBias (375W/ch 8 Ohm)

KRELL SOLO 575 XD Listino ufficiale €. 18.600,00

Finale mono a stato solido in classe A pura tecnologia iBias (575W/ch 8 Ohm)

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KRELL TRIO 300 XD Listino ufficiale €. 18.600,00

Finale a 3 canali classe A pura tecnologia iBias (300W/ch 8 ohms)

Krell Class A iBias Technology Krell's history is rich with breakthrough Class A amplifiers that have helped build the Krell legacy of offering the best sounding amplifiers available. Audiophiles have always considered Class A technology to be the best sounding operating state for amplifiers. However, despite Class A's unrivaled sound quality, it has fallen out of fashion because of recent demands to reduce power consumption and heat in home electronics products. Krell engineering took this challenge and redefined the meaning of high performance power amplifier. Our goal - unmatched performance, elegant design, and a compelling array of features. The breakthrough - a patent pending circuit delivering Class A operation without the excessive heat and wasted energy of conventional designs, housed in a striking new form factor, with network connectivity for advanced access and monitoring. The sound is open and unconstrained, in a manner that rivals live performance and the true sound of voices and instruments. Music and dialogue are reproduced with a richness, detail, and startling dynamics that fill a room. Plainly stated, Class A designs are the most musically accurate circuit topology available. Class A amplifiers do not suffer from the inherent distortions that all Class AB amplifiers experience. In a traditional Class A design, the output transistors conduct full current at all times regardless of the actual demand from the speakers. Often, only a fraction of this power is needed to reproduce an audio signal at normal listening levels. The rest of the power is dissipated through the amplifier’s heat sinks, producing large amounts of wasted heat. With Krell's iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krell's iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. Previous efforts at using a "tracking" bias, while effective, only measured the incoming signal and set bias levels from this information. Our new patent pending iBias technology significantly elevates the effectiveness of previous designs by calculating bias from the output stage. This seemingly small change in topology results in a dramatic improvement in sound quality, especially midrange richness and purity. The core of the technology is an innovative, patent pending design for a dynamic intelligent bias circuit. Our iBias Class A circuit directly measures the output current of the amplifier and adjusts the bias to the optimum level. Because iBias Class A measures the output current, the real time demands of the specific speaker connected to the amp are directly incorporated into the circuit function. In addition, iBias Class A even reduces the bias when the signal is at very low levels, making its operation undetectable by ear and even by standard amplifier measurements. In sliding bias schemes, the circuit merely estimates how much bias is needed based on the input signal and an "assumed speaker load." Compared with iBias Class A, these sliding bias technologies are much less effective - and much less accurateTRIO 300 3 Channel Power Amplifier 300 Watt Amplifier Featuring Krell iBias Technology Specifications •300 Watts into 8 Ohms •3 ea - Single-ended RCA and Balanced XLR Inputs •1 RJ 45 Ethernet Port•1 12V Trigger Input•WBT Speaker Binding Posts•Optional Rack Mount Kit •17 W, 7 H, 21 D in•43.3 W, 17.7 H, 53.1 D cm •Weight: 80 lbs, 36 kg

KRELL CHORUS 5200 XD Listino ufficiale €. 14.300,00

Finale a 5 canali stato solido in classe A pura tecnologia iBias (200W/ch 8 Ohm)

Krell Class A iBias Technology Krell's history is rich with breakthrough Class A amplifiers that have helped build the Krell legacy of offering the best sounding amplifiers available. Audiophiles have always considered Class A technology to be the best sounding operating state for amplifiers. However, despite Class A's unrivaled sound quality, it has fallen out of fashion because of recent demands to reduce power consumption and heat in home electronics products. Krell engineering took this challenge and redefined the meaning of high performance power amplifier. Our goal - unmatched performance, elegant design, and a compelling array of features. The breakthrough - a patent pending circuit delivering Class A operation without the excessive heat and wasted energy of conventional designs, housed in a striking new form factor, with network connectivity for advanced access and monitoring. The sound is open and unconstrained, in a manner that rivals live performance and the true sound of voices and instruments. Music and dialogue are reproduced with a richness, detail, and startling dynamics that fill a room. Plainly stated, Class A designs are the most musically accurate circuit topology available. Class A amplifiers do not suffer from the inherent distortions that all Class AB amplifiers experience. In a traditional Class A design, the output transistors conduct full current at all times regardless of the actual demand from the speakers. Often, only a fraction of this power is needed to reproduce an audio signal at normal listening levels. The rest of the power is dissipated through the amplifier’s heat sinks, producing large amounts of wasted heat. With Krell's iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krell's iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. Previous efforts at using a "tracking" bias, while effective, only measured the incoming signal and set bias levels from this information. Our new patent pending iBias technology significantly elevates the effectiveness of previous designs by calculating bias from the output stage. This seemingly small change in topology results in a dramatic improvement in sound quality, especially midrange richness and purity. The core of the technology is an innovative, patent pending design for a dynamic intelligent bias circuit. Our iBias Class A circuit directly measures the output current of the amplifier and adjusts the bias to the optimum level. Because iBias Class A measures the output current, the real time demands of the specific speaker connected to the amp are directly incorporated into the circuit function. In addition, iBias Class A even reduces the bias when the signal is at very low levels, making its operation undetectable by ear and even by standard amplifier measurements. In sliding bias schemes, the circuit merely estimates how much bias is needed based on the input signal and an "assumed speaker load." Compared with iBias Class A, these sliding bias technologies are much less effective - and much less accurateCHORUS 5200 5 Channel Power Amplifier 200 Watt Amplifier Featuring Krell iBias Technology Frequency response 20 Hz to 20 kHz +0, –0.08 dB <0.5 Hz to 100 kHz +0, –3 dB Signal-to-noise ratio >95 dB, wideband, unweighted, referred to full power output >115 dB, “A”-weighted Gain 26.2 dB Total harmonic distortion <0.04% at 1 kHz, at 200 W, 8 Ω <0.15% at 20 kHz, at 200 W, 8 Ω Input impedance Single-ended: 100 kW Balanced: 200 kΩ Input sensitivity Single-ended or balanced: 1.96 V RMS Output power 200 W RMS at 8 Ω 360 W RMS at 4 Ω Output voltage 113 V peak-to-peak 40 V RMS Output current 13.4 A peak Slew rate 40 V/ms Output impedance <0.038 W, 20 Hz to 20 kHz Damping factor >210, 20 Hz to 20 kHz, referred to 8W Power consumption Standby: 1 W Idle: 182 W Maximum: 2100 W Heat output< Standby: 3.4 BTU/hr. Idle: 623 BTU/hr. Maximum: 7182 BTU/hr. Inputs 5 single-ended via RCA connector 5 balanced via XLR connector Outputs 5 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10 in. D 434 mm W x 194 mm H x 536 mm D Weight 95 lbs., 43.2 kg (shipping) 85 lbs., 38.6 kg (unit only)

KRELL CHORUS 7200 XD Listino ufficiale €. 17.100,00

Finale a 7 canali stato solido in classe A pura tecnologia iBias (200W/ch 8 Ohm)

Krell Class A iBias Technology Krell's history is rich with breakthrough Class A amplifiers that have helped build the Krell legacy of offering the best sounding amplifiers available. Audiophiles have always considered Class A technology to be the best sounding operating state for amplifiers. However, despite Class A's unrivaled sound quality, it has fallen out of fashion because of recent demands to reduce power consumption and heat in home electronics products. Krell engineering took this challenge and redefined the meaning of high performance power amplifier. Our goal - unmatched performance, elegant design, and a compelling array of features. The breakthrough - a patent pending circuit delivering Class A operation without the excessive heat and wasted energy of conventional designs, housed in a striking new form factor, with network connectivity for advanced access and monitoring. The sound is open and unconstrained, in a manner that rivals live performance and the true sound of voices and instruments. Music and dialogue are reproduced with a richness, detail, and startling dynamics that fill a room. Plainly stated, Class A designs are the most musically accurate circuit topology available. Class A amplifiers do not suffer from the inherent distortions that all Class AB amplifiers experience. In a traditional Class A design, the output transistors conduct full current at all times regardless of the actual demand from the speakers. Often, only a fraction of this power is needed to reproduce an audio signal at normal listening levels. The rest of the power is dissipated through the amplifier’s heat sinks, producing large amounts of wasted heat. With Krell's iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krell's iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. Previous efforts at using a "tracking" bias, while effective, only measured the incoming signal and set bias levels from this information. Our new patent pending iBias technology significantly elevates the effectiveness of previous designs by calculating bias from the output stage. This seemingly small change in topology results in a dramatic improvement in sound quality, especially midrange richness and purity. The core of the technology is an innovative, patent pending design for a dynamic intelligent bias circuit. Our iBias Class A circuit directly measures the output current of the amplifier and adjusts the bias to the optimum level. Because iBias Class A measures the output current, the real time demands of the specific speaker connected to the amp are directly incorporated into the circuit function. In addition, iBias Class A even reduces the bias when the signal is at very low levels, making its operation undetectable by ear and even by standard amplifier measurements. In sliding bias schemes, the circuit merely estimates how much bias is needed based on the input signal and an "assumed speaker load." Compared with iBias Class A, these sliding bias technologies are much less effective - and much less accurate CHORUS 7200 7 Channel Power Amplifier 200 Watt Amplifier Featuring Krell iBias Technology Frequency response 20 Hz to 20 kHz +0, –0.08 dB <0.5 Hz to 100 kHz +0, –3 dB Signal-to-noise ratio >95 dB, wideband, unweighted, referred to full power output >115 dB, “A”-weighted Gain 26.2 dB Total harmonic distortion <0.04% at 1 kHz, at 200 W, 8 Ω <0.15% at 20 kHz, at 200 W, 8 Ω Input impedance Single-ended: 100 kW Balanced: 200 kΩ Input sensitivity Single-ended or balanced: 1.96 V RMS Output power 200 W RMS at 8 Ω 360 W RMS at 4 Ω Output voltage 113 V peak-to-peak 40 V RMS Output current 13.4 A peak Slew rate 40 V/ms Output impedance <0.038 W, 20 Hz to 20 kHz Damping factor >210, 20 Hz to 20 kHz, referred to 8 W Power consumption Standby: 1 W Idle: 255 W Maximum: 2800 W Heat output< Standby: 3.4 BTU/hr. Idle: 873 BTU/hr. Maximum: 9590 BTU/hr. Inputs 7 single-ended via RCA connector 7 balanced via XLR connector Outputs 7 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10 in. D 434 mm W x 194 mm H x 536 mm D Weight 110 lbs., 50 kg (shipping) 100 lbs., 45.4 kg (unit only)

KRELL THEATER 7 XD Listino ufficiale €. 12.350,00

Finale a 7 canali a stato solido in classe A tecnologia iBias XD (100W/ch 8 Ohm)

THEATER 7 XD 7 Channel Power Amplifier 100 Watt Amplifier Featuring Krell iBias Technology The amplifier design uses Krell Current Mode technology that is fully differential and discrete in the critical gain stages. This results in a highly linear and extended frequency response, well beyond the range of hearing, for smooth effortless highs and tight high impact bass. The power supply consists of two 787VA toroidal transformers and 160,000uF of capacitance. This is shared among all the channels so all of that power is available to the channels with the most demand. In real world conditions the left, right, and center channels require the lion’s share of the power so this gives the Theater 7 a more effective power supply than other amplifiers that have smaller dedicated power supplies for each channel. Frequency response 20 Hz to 20 kHz +0, –0.11 dB <3 Hz to 200 kHz +0, –3 dB Signal-to-noise ratio >101 dB, wideband, unweighted, referred to full power output >114 dB, “A”-weighted Gain 25.5 dB Total harmonic distortion <0.02% at 1 kHz, at 100 W, 8 Ω, two channels driven; <0.20% at 20 kHz, at 100 W, 8 Ω, two channels driven; Input impedance Single-ended: 27 kΩ; Balanced: 54 kΩ; Input sensitivity Single-ended or balanced: 1.50 V RMS Output power, per channel 120W RMS at 8 Ω, 2 channels driven 115W RMS at 8 Ω, 3 channels driven 110W RMS at 8 Ω, 5 channels driven 105W RMS at 8 Ω, 7 channels driven 210W RMS at 4 Ω, 2 channels driven 190W RMS at 4 Ω, 3 channels driven 165W RMS at 4 Ω, 5 channels driven 140W RMS at 4 Ω, 7 channels driven Output voltage 93 V peak-to-peak 33 V RMS Output current 10 A peak Output impedance <0.025 Ω, 20 Hz to 20 kHz Damping factor >320, 20 Hz to 20 kHz, referred to 8 Ω Power consumption Standby: 1 W Idle: 66 W Maximum: 2000 W Heat output Standby: 3.42 BTU/hr. Idle: 225 BTU/hr. Maximum: 2200 BTU/hr. Inputs 7 single-ended via RCA connector 7 balanced via XLR connector Outputs 7 pairs five-way binding posts Remote connectors One 12 VDC input (12 V trigger) via 3.5 mm jack Dimensions 17.1 in. W x 7.65 in. H x 21.10 in. D 434 mm W x 194 mm H x 536 mm D Weight 80 lbs., 36.4 kg (shipping) 70 lbs., 31.8 kg (unit only)

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KRELL FOUNDATION 4K Listino ufficiale €. 13.000,00

Pre/processore 4K e 7.1 con XLR/RCA, HDMI 2.0, True HD, DTS Ma, 3D, IP control
Ultra HD Processor

The Foundation 4K UHD Surround Sound Processor couples award winning Krell preamplifier circuitry to the latest in HDMI technology to create the centerpiece of a high performance home theater system. The Foundation 4K UHD adds HDMI 2.0 and HDCP 2.2 technology to the award winning Foundation processor. Designed to be upgradeable, existing Foundation processors can be upgraded to the Foundation 4K UHD platform at the Krell facility. The Foundation 4K UHD updates 4 of the 10 HDMI 1.4a inputs to HDMI 2.0/HDCP 2.2 capability. New on screen display functionality adds status messages including volume, active source, video resolution and audio format. System setup is accomplished from the front panel or a network tablet/computer.Additional functionality has been added to the second HDMI output. The two HDMI video outputs are now independent and can be configured to send different video signals to two individual displays. Both outputs support 4K signals being simultaneously displayed.Both HMDI outputs feature Audio Return Channel (ARC). With ARC, a display device is able to send audio back down the HDMI cable to the Foundation 4K UHD. Televisions with built-in web streaming capability like Netflix or Pandora, can send the audio signal back to the Foundation 4K UHD use the full home theater system instead of just the TV's speakers.Featuring the latest digital connectivity, the Foundation 4K UHD maintains Krell's exacting standards for analog audio reproduction.From decoding the latest lossless audio formats, extensive digital switching, 3DTV pass-through, and more, the Foundation 4K UHD is fully compliant with the digital age. The 7.1-channel processor also features balanced audio outputs, automatic setup and room EQ, and Krell's legendary robust hardware. A slim form factor exudes the Krell aesthetic, while allowing placement in smaller equipment racks.The Foundation 4K UHD features Krell's Automatic Room Equalization System (ARES), to ensure the best possible performance from every theater. ARES analyzes all the speakers in the system, their location, phase, and distance from each other, to determine the best crossover frequency, delay, and more. In addition, ARES incorporates the acoustics of the room to determine unique EQ curves for each of the 7.1 output channels. Unlike other room EQs, ARES can be programmed to only adjust the troublesome low frequencies, leaving high frequencies unaltered. The Foundation 4K UHD includes a new Krell development - Intelligent HDMI switching. Intelligent HDMI switching is a combination of circuitry and innovative software that optimizes HDMI operation. Various parameters including the monitor's electronic ID and source video resolution are stored in non-volatile memory. All 10 source inputs are always active so source, channel, video resolution, and audio format changes are instantaneous. The Intelligent HDMI design provides the fastest signal recognition possible.The Foundation 4K UHD passes video signals directly without any video processing, ensuring bit-for-bit accuracy of the signal, up to 3840x2160. However, to simplify cabling, setup, and use, there is full transcoding of the 2 composite and 3 component analog video inputs to the HDMI outputs. Krell designed the Foundation 4K UHD with flexibility and ease-of-use in mind, with extensive routing capability of the audio inputs to the various outputs. During setup, the specific paths will be chosen based on how the user intends to use each source, displays, and audio output channels. The Foundation 4K UHD supports stereo and multichannel DSD decoding via any of the 10 HDMI inputs. Playback options include DSD 2-ch Direct, DSD Stereo, and DSD Multi modes. DSD 2-ch Direct converts a stereo DSD signal to analog and directly passes it to the left and right analog outputs. DSD Stereo first applies any left and right channel crossover configured in the Foundation 4K UHD menu, converts the signal to analog, and then sends it to the left and right outputs. DSD Multi supports multichannel DSD recordings and utilizes all crossovers configured in the Foundation 4K UHD menu. There is no configuration required as the Foundation 4K UHD automatically recognizes a DSD signal and defaults to the last used DSD mode for playback. Pressing the mode button on the remote control or web server interface will cycle through all three DSD modes.The Foundation 4K UHD will allow owners to take full advantage of the best audio soundtracks available, with decoding of Dolby Digital, Digital Plus, Dolby TrueHD, DTS, DTS-ES Discrete, Matrix, and DTS-HD Master Audio. In addition, a full suite of post-processing modes are included, including Dolby Pro Logic IIx and DTS Neo 6. Krell's proprietary surround modes, Party, General Admission, Front Row, and On Stage, offer a different way to listen to favorite tracks.The Foundation 4K UHD also offers features that make it perfect for custom installation, such as 3.5mm jacks for IR input and 12-volt trigger input and output, as well as RC-5 and optional rack-mount ears. Additionally, the unit can be controlled with home automation systems via RS-232 or the Krell web server through its Ethernet connection. The Foundation also offers features that make it perfect for custom installation, such as 3.5mm jacks for IR input and 12-volt trigger input and output, as well as RC-5 and optional rack-mount ears. Additionally, the unit can be controlled with home automation systems via RS-232 or the Krell web server through its Ethernet connection.

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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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