Selling for a client. New in open box Krell Chorus 5200 5ch Amplifier XD. Brand new these retails for $12,000. Comes in original box.This was originally purchased for a client and when it arrived, he decided to go with another system. Has been out of the original box once for these photographs. Below is more detailed information. System has been tested and everything works as it should. Item is being sold as is. No returns. Please ask questions prior to bidding. Krell Class A iBias TechnologyKrells 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 As 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 Krells iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krells 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. Power Supply HighlightsPower supply technology has always been an important contributor to the Krell sound. The power supplies of our Krell iBias Class A amplifiers have been optimized for use with the iBias circuit. Depending on the model, up to four toroidal transformers feed amplifier modules that include the audio circuitry, rectifier, and power supply filtering mounted to an individual heat sink. This design shortens the electrical path from the power supply to the output transistors, reducing the overall impedance and allowing the circuit to respond faster and control the speakers even better and more accurately. Unlike traditional Class A amplifiers, iBias Class A amps have a compact design that allows rack-mounting, making them ideal for custom installation as well as traditional audiophile systems. This convenient form factor is made possible through thermostatically controlled ventilation fans. The fans used are specifically chosen for quiet operation, and operate at the speed required to maintain the ideal internal temperature. They run only during periods of peak energy demand - when the music is at its loudest - so they are inaudible in normal use. Network ConnectivityThe new amplifiers include RJ 45 Ethernet connectivity and an internal web page that is accessible from any smartphone, tablet, or laptop. Network connectivity brings convenience, monitoring, and reporting to end users. Amplifier configuration options include display brightness and timeout. For energy conservation, the amplifiers can be programmed to power off at a preset time of inactivity. Individual channels can be muted and firmware updates can be initiated from the web server. Once the amplifier is connected to a network router with Internet access, the amplifiers advanced protection systems are now viewable on an Internet-connected device. Excessive current, output DC, fan speeds, short circuit, and overheating are all monitored in real time. If an issue occurs, the fault is displayed on the front panel and reported on the web server interface. Emails will automatically be sent to as many as three email addresses to notify the end user and/or the dealer of the condition. Circuitry HighlightsThe new iBias circuitry is built on a foundation of core Krell circuit technologies. All signal gain is realized in the current domain using proprietary multiple-output current mirrors with extraordinary open loop linearity. Each amplifier channel uses all discrete components. There are no generic integrated circuits or op amps used anywhere. Gain is distributed among several stages, allowing each to have a large linear operating area. Audio signal voltages are converted to current at the amplifier input, and the audio signal remains in the current domain throughout the entire amplifier. Current mirrors in the final gain stages use a new output power device that operates at a 73% higher voltage, delivers almost 10% more current, and offers 120 watts of additional power handling capability as compared to other devices. With this combination, the iBias amplifiers may now deliver substantially more power while using a smaller footprint. Normally used in demanding, high-bandwidth video circuits, these transistors allow the design of gain stages with superb accuracy and very low distortion. The signal path is fully complementary and fully balanced from input to output. Independent complementary pre driver and driver stages for the positive and negative output transistors make the output stages extremely fast and linear. This unique circuit is impervious to low-impedance or reactive loads; it simply drives any loudspeaker with absolute confidence, achieving the very best possible sonic results. Most amplifiers use coupling capacitors in the signal path to block DC and prevent damaging offset voltages from reaching your speakers. Krell amplifiers are fully direct-coupled, with no capacitors in the audio signal path. This design gives the Krell amplifiers lower internal impedance, which allows firmer, more precise control of your speakers. It also provides flatter, more extended low-frequency response, because coupling capacitors not only block DC but also affect the lowest bass frequencies. Krell employs expensive, non intrusive DC servos that remove DC without impacting the musical signal. Thus, the iBias Class A amplifiers deliver the full breadth of the music with detail, impact, and space intact. Everything Audiophiles and Home Theater Fans Could Want in an AmplifierKrell iBias Class A amplifiers are the first to deliver the rich musicality of Class A amplifiers, the uncompromised dynamics of classic Krell amplifiers, and the efficiency and low power consumption of Class G and H amplifiers. Because the iBias circuit eliminates crossover distortion, the amplifier is able to resolve more of the detail and microdynamics in even the best analog recordings. Simply put, the music breathes. Whether an iBias amplifier is called on to reproduce the extreme dynamic range of high-resolution digital files, the minute intricacies of a 45-rpm, 180-gram vinyl record, or the complexity of today’s latest blockbuster action film, it does so without altering or abating the music in any way. The iBias amplifiers unprecedented ability to retrieve the subtlest details gives their sound an incredible dimensionality, with an ambient, broad and extraordinarily deep soundstage. As spacious as the sound is, though, the amplifiers are still able to produce pinpoint stereo imaging if the recording calls for it. Its all the power and control for which Krell has always been famous, with a level of resolution and musicality in the midrange and treble that has simply never been heard before. In short, the new patent pending iBias Class A Krell amplifers give todays audiophiles and home theater fans everything they could possibly want in an amplifier 200 Watt Amplifier Featuring Krell iBias Technology Frequency response20 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 ? <0.15% at 20 kHz, at 200 W, 8 ? Input impedanceSingle-ended: 100 kW Balanced: 200 k? Input sensitivitySingle-ended or balanced: 1.96 V RMS Output power 200 W RMS at 8 ? 360 W RMS at 4 ? Output voltage113 V peak-to-peak40 V RMS Output current13.4 A peak Slew rate40 V/ms Output impedance<0.038 W, 20 Hz to 20 kHz Damping factor>210, 20 Hz to 20 kHz, referred to 8W Power consumptionStandby: 1 WIdle: 182 WMaximum: 2100 W Heat output< Standby: 3.4 BTU/hr.Idle: 623 BTU/hr.Maximum: 7182 BTU/hr. Inputs5 single-ended via RCA connector5 balanced via XLR connector Outputs5 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10 in. D434 mm W x 194 mm H x 536 mm D Weight 95 lbs., 43.2 kg (shipping)85 lbs., 38.6 kg (unit only)

Power amplifier KRELL KSA-200S Onwards Vintage Second-Hand Item Ship From JapanDescriptionKRELL KSA-200S power amplifier. This generation of power amplifiers has four lineups: KSA-50S ? KSA100S ? KSA-200S and KSA-300S. From the 200s onwards, the original KRELL construction and sound are made. As stated on the Forbidden KRELL site, there are very few used items on sale. As stated on the website, one reason is that its expensive, but I dont think anyone wants to part with it because the sound is good. If you have a decent system, use a power amplifier with this ridiculously large transformer. You should hear a bass sound that you have never heard before. Ive used many power amplifiers, but the sound separation (you dont feel the presence of the speakers) is the best. Also, with power amplifiers from this era, residual noise is a concern, but the highly sensitive B&W 802SD has virtually no residual noise. There are very few class A amplifiers whose output follows linearly from 8 ohms, 200 watts to 1 ohms, 1,600 watts. ShippingShipping by FedEx or EMS.International Buyers - Please Note:Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying.Thank you for your understanding.

Hier biete ich einen Katalog an:Here you can purchase a catalog:Ici je propose un catalogue:Hier bied ik een catalogus aan: Prospekt Krell HiFi-Systeme, 2002. Englische Ausgabe, English edition.Versand weltweit, perfekte Verpackung!Shipping worldwide, perfect packaging! Drucknummer, print number: 2002 Sprache, language: Englisch, English, GB Zustand, condition: Hervorragend, excellent! Seitenanzahl, pages: 8 Format, size: 28 x 21,5 cmGewicht, weight: 0,037 kgBitte beachten Sie die Fotos! Note photos, please! Veuillez noter les photos! Let op de fotos!

Hier biete ich einen Katalog an:Here you can purchase a catalog:Ici je propose un catalogue:Hier bied ik een catalogus aan: Prospekt Krell KAV-Series HiFi-System, 2002. Englische Ausgabe, English edition.Versand weltweit, perfekte Verpackung!Shipping worldwide, perfect packaging! Drucknummer, print number: 2002 Sprache, language: Englisch, English, GB Zustand, condition: Hervorragend, excellent! Seitenanzahl, pages: 8 Format, size: 28 x 21,5 cmGewicht, weight: 0,037 kgBitte beachten Sie die Fotos! Note photos, please! Veuillez noter les photos! Let op de fotos!

Hier biete ich einen Katalog an:Here you can purchase a catalog:Ici je propose un catalogue:Hier bied ik een catalogus aan: Prospekt Krell Showcase-Series HiFi-System, 2002. Englische Ausgabe, English edition.Versand weltweit, perfekte Verpackung!Shipping worldwide, perfect packaging! Drucknummer, print number: 2002 Sprache, language: Englisch, English, GB Zustand, condition: Hervorragend, excellent! Seitenanzahl, pages: 4 Format, size: 28 x 21,5 cmGewicht, weight: 0,018 kgBitte beachten Sie die Fotos! Note photos, please! Veuillez noter les photos! Let op de fotos!

Hier biete ich einen Katalog an:Here you can purchase a catalog:Ici je propose un catalogue:Hier bied ik een catalogus aan: Prospekt Krell LAT-Series + MRS Lautsprecher, 2002. Englische Ausgabe, English edition.Versand weltweit, perfekte Verpackung!Shipping worldwide, perfect packaging! Drucknummer, print number: 2002 Sprache, language: Englisch, English, GB Zustand, condition: Hervorragend, excellent! Seitenanzahl, pages: 8 Format, size: 28 x 21,5 cmGewicht, weight: 0,036 kgBitte beachten Sie die Fotos! Note photos, please! Veuillez noter les photos! Let op de fotos!

The worlds largest online retailer of pre-owned audio Product DescriptionWho we areWhat we doOur ProcessOur Policies Krell KRS 200 Mono Power Amplifier; Pair; KRS200 Product SKU: 49073 Voltage: 120V # of Owners: 2 Serial Number: 6249, 6328 Age: Unknown Tobacco Exposure: No Cosmetic Description: Good cosmetic condition with some minor visible cosmetic wear including nicks along the faceplate, top surface, and heat shrink fin edges. This item shows some wear consistent with its age but is still presentable and sounds wonderful. What is Included: Pair of amplifiers, Flight cases Service History: This pair of amplifiers was fully recapped by George Meyer AV in 2022. Functional Notes: Operational condition of this item is excellent, fully tested and no issues found. Shipping: Shipping within the Continental USA is $599- This includes securing to a pallet with adequate protection and shipping via FedEx Freight to a residential address anywhere in the Continental USA. This rate can be reduced by $60 if a commercial delivery address available or if item can be picked up at nearest FedEx Freight depot. FedEx Freight charges a residential delivery fee otherwise which is included in our flat rate charge. Your online source for the best value in new and used audio gear. Visit us online to Buy / Sell / Trade / Consign The Music Room is the largest online retailer of pre-owned HiFi equipment in the world. Headquartered in beautiful Boulder Colorado, The Music Room is a team of 17 strong (and growing) music lovers - all dedicated to one singular mission: delivering the very best online shopping experience in the audio industry - period. We specialize in well-cared for, previously used gear because that is what we are passionate about. We feel that there is nothing more fulfilling than creating a high-performance system on a budget with carefully selected used components, speakers and cables. Our program is safe, secure, fast, fair, hassle-free and highly effective. Visit us online to Buy / Sell / Trade / Consign Buy: Are you looking to get a fair price for your used home audio equipment without all the hassles, headaches, risks and fees? We will appraise your equipment and make you a quick, easy, fair cash offer. Just fill out our “get a quote” form on our homepage to start the process. Sell: We sell in multiple online venues with many (but not all) of our products available in our eBay store. Everything is quality-assured and backed by our best-in-class, satisfaction-guaranteed return policy. Trade: Make your budget go further with a generous trade-in allowance. Let us know what you have available, and we’ll get you the best possible trade-in allowance. We can even assist with shipping & logistics from anywhere in the USA. Just fill out our “get a quote” form on our homepage to start the process. Consign: We offer a hassle-free way for individuals and businesses to liquidate used gear. We’ll handle every step of the process from shipping to appraisals, customer service, fulfillment, and returns: Industry-low rates with no hidden fees Leverage our world-class reputation and get exposure in multiple sales venues - putting your product in front of over 570k monthly shoppers. Our program is Safe, Secure, Fast, Fair, Hassle-Free and Highly Effective. With 100% feedback ratings in every venue in which we sell, you can rest assured that we’ve got your back. Visit us online to Buy / Sell / Trade / Consign Quality Assurance: We offer 15-20 new product listings for sale daily. Each product undergoes an extremely rigorous quality-assurance and listening session by one of our qualified technicians. We understand that buying used audio equipment can be rife with uncertainty and unexpected headaches. Our quality assurance program is informed by a knowledge-base built through delivering over 30,000 used audio products to satisfied customers. We promise to deliver your product in good working order - exactly as described 100% of the time. Support: We don’t just make promises. We stand behind them - your satisfaction is guaranteed. Our support team is ready to help you with any questions you might have before and after the sale. Value: In the never-ending pursuit of high performance, it’s important to stretch your limited budget as far as possible. Used equipment sells for a fraction of new prices, and with a partner like The Music Room you can upgrade any time you like and get most of your money back. There’s simply no better way to maximize a limited audio budget. Packaging: We’ve invested thousands of dollars and countless hours into mastering our state-of-the-art packaging process. Our custom foam-in-place packaging system allows us to safely package almost any item regardless of irregular shapes or sizes. Most importantly, this system provides our customers with a re-usable shipping box which increases the resale value of the product and provides a shipping method for easy, secure returns. Be seen by over 70,000 monthly visitors. Visit us online to Buy / Sell / Trade / Consign Payment: Prompt payment is expected. Paypal is preferred but all forms of payment are accepted. Unpaid item case will be opened after 3 days if no payment received. Shipping Times: Most Domestic orders ship within 1 business day of purchase. For International orders or freight shipments, please allow 2-3 business days. In all cases, tracking information will be emailed to you at the moment the shipping label is created. If you cant find it or have other questions about shipping & logistics, please contact us. Shipping Costs: Flat rate shipping costs are applicable within the contiguous 48 States (USA). These rates are clearly posted on each product page. For an International or custom quote (including Hawaii, PR, AK) please contact us. Returns: Every purchase made on eBay carries a 30-day, satisfaction-guaranteed return policy. If youre not happy with your purchase for any reason or if youve simply changed your mind... no problem. Simply ship it back for a full refund or exchange (minus S&H costs). If you have received an item that is defective in some way, we will make it right. Let us know - we will pay for return shipping and repair the item or refund 100% of your original purchase price.

Selling for a client. New in open box Krell Chorus 5200 5ch Amplifier XD. Brand new these retails for $12,000. Comes in original box.This was originally purchased for a client and when it arrived, he decided to go with another system. Has been out of the original box once for these photographs. Below is more detailed information. System has been tested and everything works as it should. Item is being sold as is. No returns. Please ask questions prior to bidding. Krell Class A iBias TechnologyKrells 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 As 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 Krells iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krells 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. Power Supply HighlightsPower supply technology has always been an important contributor to the Krell sound. The power supplies of our Krell iBias Class A amplifiers have been optimized for use with the iBias circuit. Depending on the model, up to four toroidal transformers feed amplifier modules that include the audio circuitry, rectifier, and power supply filtering mounted to an individual heat sink. This design shortens the electrical path from the power supply to the output transistors, reducing the overall impedance and allowing the circuit to respond faster and control the speakers even better and more accurately. Unlike traditional Class A amplifiers, iBias Class A amps have a compact design that allows rack-mounting, making them ideal for custom installation as well as traditional audiophile systems. This convenient form factor is made possible through thermostatically controlled ventilation fans. The fans used are specifically chosen for quiet operation, and operate at the speed required to maintain the ideal internal temperature. They run only during periods of peak energy demand - when the music is at its loudest - so they are inaudible in normal use. Network ConnectivityThe new amplifiers include RJ 45 Ethernet connectivity and an internal web page that is accessible from any smartphone, tablet, or laptop. Network connectivity brings convenience, monitoring, and reporting to end users. Amplifier configuration options include display brightness and timeout. For energy conservation, the amplifiers can be programmed to power off at a preset time of inactivity. Individual channels can be muted and firmware updates can be initiated from the web server. Once the amplifier is connected to a network router with Internet access, the amplifiers advanced protection systems are now viewable on an Internet-connected device. Excessive current, output DC, fan speeds, short circuit, and overheating are all monitored in real time. If an issue occurs, the fault is displayed on the front panel and reported on the web server interface. Emails will automatically be sent to as many as three email addresses to notify the end user and/or the dealer of the condition. Circuitry HighlightsThe new iBias circuitry is built on a foundation of core Krell circuit technologies. All signal gain is realized in the current domain using proprietary multiple-output current mirrors with extraordinary open loop linearity. Each amplifier channel uses all discrete components. There are no generic integrated circuits or op amps used anywhere. Gain is distributed among several stages, allowing each to have a large linear operating area. Audio signal voltages are converted to current at the amplifier input, and the audio signal remains in the current domain throughout the entire amplifier. Current mirrors in the final gain stages use a new output power device that operates at a 73% higher voltage, delivers almost 10% more current, and offers 120 watts of additional power handling capability as compared to other devices. With this combination, the iBias amplifiers may now deliver substantially more power while using a smaller footprint. Normally used in demanding, high-bandwidth video circuits, these transistors allow the design of gain stages with superb accuracy and very low distortion. The signal path is fully complementary and fully balanced from input to output. Independent complementary pre driver and driver stages for the positive and negative output transistors make the output stages extremely fast and linear. This unique circuit is impervious to low-impedance or reactive loads; it simply drives any loudspeaker with absolute confidence, achieving the very best possible sonic results. Most amplifiers use coupling capacitors in the signal path to block DC and prevent damaging offset voltages from reaching your speakers. Krell amplifiers are fully direct-coupled, with no capacitors in the audio signal path. This design gives the Krell amplifiers lower internal impedance, which allows firmer, more precise control of your speakers. It also provides flatter, more extended low-frequency response, because coupling capacitors not only block DC but also affect the lowest bass frequencies. Krell employs expensive, non intrusive DC servos that remove DC without impacting the musical signal. Thus, the iBias Class A amplifiers deliver the full breadth of the music with detail, impact, and space intact. Everything Audiophiles and Home Theater Fans Could Want in an AmplifierKrell iBias Class A amplifiers are the first to deliver the rich musicality of Class A amplifiers, the uncompromised dynamics of classic Krell amplifiers, and the efficiency and low power consumption of Class G and H amplifiers. Because the iBias circuit eliminates crossover distortion, the amplifier is able to resolve more of the detail and microdynamics in even the best analog recordings. Simply put, the music breathes. Whether an iBias amplifier is called on to reproduce the extreme dynamic range of high-resolution digital files, the minute intricacies of a 45-rpm, 180-gram vinyl record, or the complexity of today’s latest blockbuster action film, it does so without altering or abating the music in any way. The iBias amplifiers unprecedented ability to retrieve the subtlest details gives their sound an incredible dimensionality, with an ambient, broad and extraordinarily deep soundstage. As spacious as the sound is, though, the amplifiers are still able to produce pinpoint stereo imaging if the recording calls for it. Its all the power and control for which Krell has always been famous, with a level of resolution and musicality in the midrange and treble that has simply never been heard before. In short, the new patent pending iBias Class A Krell amplifers give todays audiophiles and home theater fans everything they could possibly want in an amplifier 200 Watt Amplifier Featuring Krell iBias Technology Frequency response20 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 ? <0.15% at 20 kHz, at 200 W, 8 ? Input impedanceSingle-ended: 100 kW Balanced: 200 k? Input sensitivitySingle-ended or balanced: 1.96 V RMS Output power 200 W RMS at 8 ? 360 W RMS at 4 ? Output voltage113 V peak-to-peak40 V RMS Output current13.4 A peak Slew rate40 V/ms Output impedance<0.038 W, 20 Hz to 20 kHz Damping factor>210, 20 Hz to 20 kHz, referred to 8W Power consumptionStandby: 1 WIdle: 182 WMaximum: 2100 W Heat output< Standby: 3.4 BTU/hr.Idle: 623 BTU/hr.Maximum: 7182 BTU/hr. Inputs5 single-ended via RCA connector5 balanced via XLR connector Outputs5 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10 in. D434 mm W x 194 mm H x 536 mm D Weight 95 lbs., 43.2 kg (shipping)85 lbs., 38.6 kg (unit only)

You are bidding on a fantastic Krell KSA-200S Class A Amplifier in Extraordinary condition! 200 watts per channel class A operation! This is one of my gems that I used to run my B&W 801’s with. If you are here you already know all the specs and what this Amp can do. This AMP weighs 125lbs on its own, so shipping is possible but will not be cheap as it will need to be put in a Crate and shipped via Freight! So I am charging a Flat Rate of $400 but will refund any difference if shipping is less. I invite you to check out my Feedback and Bid With Confidence! Thank you for stopping by!

Selling for a client. New in open box Krell Chorus 5200 5ch Amplifier XD. Brand new these retails for $12,000. Comes in original box.This was originally purchased for a client and when it arrived, he decided to go with another system. Has been out of the original box once for these photographs. Below is more detailed information. System has been tested and everything works as it should. Item is being sold as is. No returns. Please ask questions prior to bidding. Krell Class A iBias TechnologyKrells 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 As 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 Krells iBias™ technology, bias is dynamically adjusted, so the output transistors receive exactly as much power - but only as much power - as they need. Krells 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. Power Supply HighlightsPower supply technology has always been an important contributor to the Krell sound. The power supplies of our Krell iBias Class A amplifiers have been optimized for use with the iBias circuit. Depending on the model, up to four toroidal transformers feed amplifier modules that include the audio circuitry, rectifier, and power supply filtering mounted to an individual heat sink. This design shortens the electrical path from the power supply to the output transistors, reducing the overall impedance and allowing the circuit to respond faster and control the speakers even better and more accurately. Unlike traditional Class A amplifiers, iBias Class A amps have a compact design that allows rack-mounting, making them ideal for custom installation as well as traditional audiophile systems. This convenient form factor is made possible through thermostatically controlled ventilation fans. The fans used are specifically chosen for quiet operation, and operate at the speed required to maintain the ideal internal temperature. They run only during periods of peak energy demand - when the music is at its loudest - so they are inaudible in normal use. Network ConnectivityThe new amplifiers include RJ 45 Ethernet connectivity and an internal web page that is accessible from any smartphone, tablet, or laptop. Network connectivity brings convenience, monitoring, and reporting to end users. Amplifier configuration options include display brightness and timeout. For energy conservation, the amplifiers can be programmed to power off at a preset time of inactivity. Individual channels can be muted and firmware updates can be initiated from the web server. Once the amplifier is connected to a network router with Internet access, the amplifiers advanced protection systems are now viewable on an Internet-connected device. Excessive current, output DC, fan speeds, short circuit, and overheating are all monitored in real time. If an issue occurs, the fault is displayed on the front panel and reported on the web server interface. Emails will automatically be sent to as many as three email addresses to notify the end user and/or the dealer of the condition. Circuitry HighlightsThe new iBias circuitry is built on a foundation of core Krell circuit technologies. All signal gain is realized in the current domain using proprietary multiple-output current mirrors with extraordinary open loop linearity. Each amplifier channel uses all discrete components. There are no generic integrated circuits or op amps used anywhere. Gain is distributed among several stages, allowing each to have a large linear operating area. Audio signal voltages are converted to current at the amplifier input, and the audio signal remains in the current domain throughout the entire amplifier. Current mirrors in the final gain stages use a new output power device that operates at a 73% higher voltage, delivers almost 10% more current, and offers 120 watts of additional power handling capability as compared to other devices. With this combination, the iBias amplifiers may now deliver substantially more power while using a smaller footprint. Normally used in demanding, high-bandwidth video circuits, these transistors allow the design of gain stages with superb accuracy and very low distortion. The signal path is fully complementary and fully balanced from input to output. Independent complementary pre driver and driver stages for the positive and negative output transistors make the output stages extremely fast and linear. This unique circuit is impervious to low-impedance or reactive loads; it simply drives any loudspeaker with absolute confidence, achieving the very best possible sonic results. Most amplifiers use coupling capacitors in the signal path to block DC and prevent damaging offset voltages from reaching your speakers. Krell amplifiers are fully direct-coupled, with no capacitors in the audio signal path. This design gives the Krell amplifiers lower internal impedance, which allows firmer, more precise control of your speakers. It also provides flatter, more extended low-frequency response, because coupling capacitors not only block DC but also affect the lowest bass frequencies. Krell employs expensive, non intrusive DC servos that remove DC without impacting the musical signal. Thus, the iBias Class A amplifiers deliver the full breadth of the music with detail, impact, and space intact. Everything Audiophiles and Home Theater Fans Could Want in an AmplifierKrell iBias Class A amplifiers are the first to deliver the rich musicality of Class A amplifiers, the uncompromised dynamics of classic Krell amplifiers, and the efficiency and low power consumption of Class G and H amplifiers. Because the iBias circuit eliminates crossover distortion, the amplifier is able to resolve more of the detail and microdynamics in even the best analog recordings. Simply put, the music breathes. Whether an iBias amplifier is called on to reproduce the extreme dynamic range of high-resolution digital files, the minute intricacies of a 45-rpm, 180-gram vinyl record, or the complexity of today’s latest blockbuster action film, it does so without altering or abating the music in any way. The iBias amplifiers unprecedented ability to retrieve the subtlest details gives their sound an incredible dimensionality, with an ambient, broad and extraordinarily deep soundstage. As spacious as the sound is, though, the amplifiers are still able to produce pinpoint stereo imaging if the recording calls for it. Its all the power and control for which Krell has always been famous, with a level of resolution and musicality in the midrange and treble that has simply never been heard before. In short, the new patent pending iBias Class A Krell amplifers give todays audiophiles and home theater fans everything they could possibly want in an amplifier 200 Watt Amplifier Featuring Krell iBias Technology Frequency response20 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 ? <0.15% at 20 kHz, at 200 W, 8 ? Input impedanceSingle-ended: 100 kW Balanced: 200 k? Input sensitivitySingle-ended or balanced: 1.96 V RMS Output power 200 W RMS at 8 ? 360 W RMS at 4 ? Output voltage113 V peak-to-peak40 V RMS Output current13.4 A peak Slew rate40 V/ms Output impedance<0.038 W, 20 Hz to 20 kHz Damping factor>210, 20 Hz to 20 kHz, referred to 8W Power consumptionStandby: 1 WIdle: 182 WMaximum: 2100 W Heat output< Standby: 3.4 BTU/hr.Idle: 623 BTU/hr.Maximum: 7182 BTU/hr. Inputs5 single-ended via RCA connector5 balanced via XLR connector Outputs5 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10 in. D434 mm W x 194 mm H x 536 mm D Weight 95 lbs., 43.2 kg (shipping)85 lbs., 38.6 kg (unit only)

Up for auction is Krell Full Power Balanced Amplifiers FPB 200, 300 and 600 Brochure. 6 pages.  Excellent condition.  

You are bidding on a fantastic Krell KSA-200S Class A Amplifier in Extraordinary condition! 200 watts per channel class A operation! This is one of my gems that I used to run my B&W 801’s with. If you are here you already know all the specs and what this Amp can do. This AMP weighs 125lbs on its own, so shipping is possible but will not be cheap as it will need to be put in a Crate and shipped via Freight! So I am charging a Flat Rate of $400 but will refund any difference if shipping is less. I invite you to check out my Feedback and Bid With Confidence! Thank you for stopping by!

Hier biete ich einen Katalog an:Here you can purchase a catalog:Ici je propose un catalogue:Hier bied ik een catalogus aan: Prospekt Krell HiFi-Systeme, 2000. Englische Ausgabe, English edition.Versand weltweit, perfekte Verpackung!Shipping worldwide, perfect packaging! Drucknummer, print number: 2000 Sprache, language: Englisch, English, GB Zustand, condition: Hervorragend, excellent! Seitenanzahl, pages: 6 Format, size: 28 x 21,5 cmGewicht, weight: 0,029 kgBitte beachten Sie die Fotos! Note photos, please! Veuillez noter les photos! Let op de fotos!

Experience superior audio quality with the Krell S-1200 7.1 Video Audio Preamp/Processor. This power amplifier boasts 1200 W of power and features audio inputs including stereo L/R RCA, two-channel RCA, and XLR, as well as seven inputs and eight outputs. With its sleek black design and United States craftsmanship, this model is a must-have for any audiophile seeking top-notch sound.Ideal for use in both home audio and TV setups, the Krell S-1200 also includes HDMI compatibility. Whether youre watching a movie or listening to music, this power amplifier will enhance your overall audio experience. Trust in the Krell brands reputation for quality and upgrade your sound system today.In perfect condition. Remote lost some coating but perfectly functional) Features• 7.1 channel Preamp/processor• Individual 24-bit/192 kHz DACs• HDMI™ 1.3 Dolby True HD and DTS Master audio• Video Transcoder• RS 232, RC 5, 12 VDC Triggers• Discrete Differential Class A Output Stages• Krell Current Mode™• Analog Video Up-conversion to 1920 x 1080p 60Hz via HDMI output and 1920 x 1080p 30Hz via component video output• Eight channel 1/3 octave parametric digital EQDimensions - 17.3 W, 9.8 H, 22.1 D, in. 43.9 W, 24.9 H, 56.1 D, cmIncludes remote (see the picture) and manual. Includes original box with all packaging for shipping.

You are bidding on a fantastic Krell KSA-200S Class A Amplifier in Extraordinary condition! 200 watts per channel class A operation! This is one of my gems that I used to run my B&W 801’s with. If you are here you already know all the specs and what this Amp can do. This AMP weighs 125lbs on its own, so shipping is possible but will not be cheap as it will need to be put in a Crate and shipped via Freight! So I am charging a Flat Rate of $400 but will refund any difference if shipping is less. I invite you to check out my Feedback and Bid With Confidence! Thank you for stopping by!

I am list a KREL KSA-200S power amp 200w per channel. It is used but excellent condition and shape . It maybe has some minor scratch nor dents or dings. I am rarely to use it because my job is alway travel. I have to move to California so i ahve to sell it. In my opinion, it is working perfect no issue. Its sound is very high end. Sorry no shipping. Just local pick up because no box and very heavy. No power cord. Any question please ask

You are bidding on a fantastic Krell KSA-200S Class A Amplifier in Extraordinary condition! 200 watts per channel class A operation! This is one of my gems that I used to run my B&W 801’s with. If you are here you already know all the specs and what this Amp can do. This AMP weighs 125lbs on its own, so shipping is possible but will not be cheap as it will need to be put in a Crate and shipped via Freight! So I am charging a Flat Rate of $400 but will refund any difference if shipping is less. I invite you to check out my Feedback and Bid With Confidence! Thank you for stopping by!

Krell S-1200u Home Theater Pre Amplifier Processor, in Silver with 3D 120V 60Hz- w/ ORIGINAL BOX: Experience superior sound quality with the Krell s1200u preamp/processor! This home theatre receiver boasts seven audio inputs, including coaxial digital, AUX, HDMI, and component, allowing you to connect multiple devices effortlessly. The surround sound formats THX and Dolby ensure an immersive audio experience, while the XLR audio outputs provide high-quality connections for your home audio setup. With seven channels and 8 outputs, the Krell s1200u offers powerful and clear audio, perfect for movie nights or music enthusiasts. This receiver is a must-have for anyone looking to enhance their home audio experience. Get yours today and enjoy the ultimate in surround sound! Qty: 1 Condition: Selling exactly as is shown; in very good shape/ excellent working condition. :) MINOR imperfections found as with pre-owned. See all pics; however, immaculately kept, stored & cared for, as shown in pics. :) IMPRESSIVE piece of home audio equipment! Complete item; comes with power cord accessory. Cleaned, tested & inspected prior listing. Thanks for looking! :) Hello! We are: THRIFTCORE, where sustainability meets savings. Discover guilt-free shopping in our online store. Your curated treasures, eco-fashion, vintage & discount goods destination. Feel great about your purchase, wallet, style & the planet! The Details: If there are any issues with your order; let us know. If we did great; let us know too! :) Add our store as a favorite seller, to keep up with our latest deals & finds. Same day shipping, during standard business hours, Monday – Friday. Otherwise, orders go out next business day! Shop with confidence with 30 DAY returns. Details are carefully provided in all our listings, so please be sure to look those over prior to purchase. All items are cleaned, sanitized & inspected prior to any shipment. Thanks for looking &..... happy hunt! :)