You are bidding on a PS Audio HCA-2 Hybrid Class A Stereo Amplifier. The unit sounds GREAT! The PS Audio is in good physical condition with scuffs and scratches.

When operating, the left channel (speaker) is much quieter and fuzzy. Right channel is loud and clear. Has been taken apart by previous owner with some screws missing on top and sides. Has scratches and blemishes. Power cable included. Selling as is. Can be a nice unit with the right work. Thanks for looking at our listing!

PSAudio HCA-2 2 Channel Amplifier Prelude Power Cable Everything is in excellent condition.

This amp is a winner, I have owned two, but ... after a couple of hours of listening the right channel began to misbehave with intermittent static. Not sure what this was about. I have a stand-by amp (Bel Canto Design) and I admit I am obsessed with balanced (XLR) components, so since that day the HCA-2 has been sitting. 150 WPC into 8, 225 into 4, fully balanced internal architecture, RCAs if you desire. Runs so cool, produces almost no heat. Has a few tiny marks on top, but face and rear are quite clean and look great. Some scratches on bottom. MSRP when new was $1695, current listing price reflects right channel issue. 17x4.5x14, 35 pounds. Owners Manual and original box/packing. Ships to the CONUS ONLY via USPS or FedEx Ground.

PS Audio HCA-2 Amplifier For sale, we have a PS Audio HCA-2 Hybrid Class A Stereo Amplifier in perfect working order. The amp has been serviced, including replacing defective output transistors, and setting the DC offset. The amp was then put on our bench where it went through our amplifier testing process. A 1k sine wave was run into the amp, while monitoring the output on our scope via a sine wave for signs of distortion or noise. Once we established there were no issues, we then slowly ran the amp up to full rated power using a dummy load provided by our Sencore PA81 power amplifier analyzer. The amp performed as it should and ran clean at 150 watts per channel at 8 ohms. Finally, we ran the amp in one of our house systems for several days where it performed beautifully. Physically the unit is in very good to excellent condition, with only minor blemishes, no dents, and no deep scratches. See pictures for further details on its physical condition. Included in the sale are the amp, original owners manual, display light adjustment tool, a generic AC cord, and original box with packing. More from PS Audio: Congratulations! You have just taken a step into an incredible new dimension of the audio world. The Hybrid Class A stereo amplifier, or HCA-2, represents a revolution in the innovation and design of amplifier technology.Analog-only amplifier circuits have been refined over and over for the last 100 years to a point where we hardly expect to gain any further significant achievements. Attempts have been made at pure digital designs only to yield results that certainly leave much more to be desired.The HCA-2 is an audiophile’s first look at these two concepts being blended into one: a hybrid amplifier with a fully balanced, Class A input stage and a truly state-of-the-art digital output section known as SDATTM.Design OverviewThe HCA-2 is a stereo (two-channel) amplifier rated at 150 watts per channel into 8 ohms. It is comprised of two main stages: the input stage and the output stage.The input stage is the heart and soul of the HCA-2’s sound. A fully balanced, Class A input stage that can be fed by either single-ended RCA connectors or the balanced XLR type.The output stage of the HCA-2 is our unique Super Digital Amplification Technology SDATTM circuitry that provides an absolutely linear response into any loudspeaker load. SDAT circuitry is not load sensitive which assures that the frequency response will not change regardless of the loudspeaker load.The HCA-2 represents a state of the art power amplifier that is affordable, efficient, and can be used to glorify the beauty and passion of recorded music in ones home. We trust you will enjoy the HCA-2 for years. Specifications: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR).Output: 4 WBT multiway binding posts.Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW).Frequency response: 10Hz-20kHz, ±0.5dB.THD+N: <0.2% at full rated power into 8 ohms (1kHz).Input sensitivity for full output: 1.15V.Input impedance: 100k ohms.Voltage gain: 30dB.Dimensions: 17 W by 4.5 H by 14 D. Weight: 30 lbs. PS Audio HCA-2 Amplifier For sale, we have a PS Audio HCA-2 Hybrid Class A Stereo Amplifier in perfect working order. The amp has been serviced, including replacing defective output transistors, and setting the DC offset. The amp was then put on our bench where it went through our amplifier testing process. A 1k sine wave was run into the amp, while monitoring the output on our scope via a sine wave for signs of distortion or noise. Once we established there were no issues, we then slowly ran the amp up to full rated power using a dummy load provided by our Sencore PA81 power amplifier analyzer. The amp performed as it should and ran clean at 150 watts per channel at 8 ohms. Finally, we ran the amp in one of our house systems for several days where it performed beautifully. Physically the unit is in very good to excellent condition, with only minor blemishes, no dents, and no deep scratches. See pictures for further details on its physical condition. Included in the sale are the amp, original owners manual, display light adjustment tool, a generic AC cord, and original box with packing.   More from PS Audio: Congratulations! You have just taken a step into an incredible new dimension of the audio world. The Hybrid Class A stereo amplifier, or HCA-2, represents a revolution in the innovation and design of amplifier technology. Analog-only amplifier circuits have been refined over and over for the last 100 years to a point where we hardly expect to gain any further significant achievements. Attempts have been made at pure digital designs only to yield results that certainly leave much more to be desired. The HCA-2 is an audiophile’s first look at these two concepts being blended into one: a hybrid amplifier with a fully balanced, Class A input stage and a truly state-of-the-art digital output section known as SDATTM. Design Overview The HCA-2 is a stereo (two-channel) amplifier rated at 150 watts per channel into 8 ohms. It is comprised of two main stages: the input stage and the output stage. The input stage is the heart and soul of the HCA-2’s sound. A fully balanced, Class A input stage that can be fed by either single-ended RCA connectors or the balanced XLR type. The output stage of the HCA-2 is our unique Super Digital Amplification Technology SDATTM circuitry that provides an absolutely linear response into any loudspeaker load. SDAT circuitry is not load sensitive which assures that the frequency response will not change regardless of the loudspeaker load. The HCA-2 represents a state of the art power amplifier that is affordable, efficient, and can be uséd to glorify the beauty and passion of recorded music in ones home. We trust you will enjoy the HCA-2 for years. Specifications: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR). Output: 4 WBT multiway binding posts. Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW). Frequency response: 10Hz-20kHz, ±0.5dB. THD+N: <0.2% at full rated power into 8 ohms (1kHz). Input sensitivity for full output: 1.15V. Input impedance: 100k ohms. Voltage gain: 30dB. Dimensions: 17 W by 4.5 H by 14 D. Weight: 30 lbs. × × × × × × × × × × × × × × × × × × × × × Tell a friend Visit store Watch now You might also like RHA MA390 UNIVERSAL MIC WIRED EARPHONES FOCAL SPARK WIRELESS SILVER RHA TRUE CONNECT BLACK WIRELESS EAR BUDS JABRA SPORT ROX WIRELESS HEADPHONES eBay integration by

For sale please find a PS Audio HCA 2 Power Amplifier that is in great cosmetic shape. This amplifier is a Hybrid Class A design and was Class A Stereophile Rated. The right channel is out, and I am unable to repair it, so I hope it finds a new home with someone who does. I will miss this amp and its glorious sound. It has upgraded caps and is otherwise original. Due to the right channel not working it is sold as is for Repair or Parts only. It will be securely shipped in the original box is came in from the manufacturer along with the original power cord, user manual and service manual. Shipping to the 48 contiguous states only.

### The Audio Board: www.theAudioBoard.com - The Search Tool for Used High-End Audio Equipment### For sale is a high-performance PS Audio HCA-2 Hybrid Class A Stereo Power Amplifier It is in original box, with manual and heavy-duty power cord. I personally tested this amp, and found it worked great. Both channels produced good full music. This amp is built like a tank. Very reliable. The amp produces very musical yet solid music. Physical condition is fine for the age, with typical wear and scratches. Some scratches are a bit deep. Ill double box and ship worldwide. The specs are: Description: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR). 4 WBT multiway binding posts. Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW). Frequency response: 10Hz-20kHz, ±0.5dB. THD+N: <0.2% at full rated power into 8 ohms (1kHz). Input sensitivity for full output: 1.15V. Input impedance: 100k ohms. Voltage gain: 30dB.Dimensions: 17 W by 4.5 H by 14 D. Weight: 35 lbs. I have other audio equipment, like Accuphase, Acurus, Adcom, Aragon, Arcam, Audio Research, Audioquest, Ayre, B&K, B&O, Bang Olufson, B&W, Bowers Wilkins, Bryston, California Audio Labs, Cary, Classe, Cambridge, Carver, Conrad Johnson, Creek, Denon, Dynaco, Dynaudio, Goldmund, Infinity, Jadis, JBL, Jolida, JM Lab, Kef, Kimber, Klipsch, Krell, Levinson, Lexicon, Linn, Marantz, Martin Logan, Mccormack, Mcintosh, Meridian, MIT, Musical Fidelity, Music Hall, NAD, Naim, Nakamichi, NHT, Paradigm, Parasound, Pass, Pioneer, Proceed, PS Audio, PSB, Quad, Rega, Revel, Rotel, Rowland, Sonic Frontiers, Sonus Faber, Spendor, Sunfire, Tandberg, Tannoy, Theta, Thiel, Threshold, Totem, Transparent, Vandersteen, Vmps, VPI, VTL, Velodyne, AR, Audio, Audiophile, Amplifier, Amps, Arcam, Acurus, Aragon, Adcom, ADS, Advent, Bose, Boston, Beovox, Bryston, Bedini, B&K, B&0, B&W, Bowers & Wilkins, Celestion, Counterpoint, Canton, Cello, Creek, Cerwin Vega, Dahlquist, Denon, Dcm, Dynaco, Dynaudio, Ess, Spica, Epicure, Ensemble, Electrostatic, Elite, Fisher, Fosgate, Harman kardon , Harbeth , Integra, Infinity, JBL, Jadis, Jolida, Linn, Luxman, KEF, Klipsch , KLH, Krell, Kenwood, Martin Logan, McIntosh, Mirage, Mission, Monitor Audio, Nad , Onkyo , Paradigm, Proac, Sony, Pioneer, Polk-Audio, Preamplifier, Quad ,Rogers, Rotel, Rega, Stanton, Speakers, Audio,Stereo,Studio, Vandersteen,, Snell, Spendor, Thorens, Vandersteen, Wharfedale, Yamaha, Speakers, Turntable, M&K, Accuphase, Dali, Wilson Audio, Sonus Faber, Definitive Technology, PSB, NHT, Magnepan, Eminent Technology, Monitor Audio, Vienna Acoustic, Meridian, Behringer, Acoustat, Genesis, Opera, Mirage, Energy, Pinnacle, Musical Fidelity, Sonic Frontiers, Cambridge Audio, Sunfire, Velodyne, SVS, HSU Research, Audio Research, Tannoy, Subwoofer, McCormack, Meadowlark, Conrad Johnson, Parasound, Magneplanar, Audible Illusions, Mark Levinson, Vintage, REL, Revel, Nakamichi, ESS, Emotiva.

### The Audio Board: www.theAudioBoard.com - The Search Tool for Used High-End Audio Equipment### For sale is a high-performance PS Audio HCA-2 Hybrid Class A Stereo Power Amplifier It is in original box, with manual and heavy-duty power cord. I personally tested this amp, and found it worked great. Both channels produced good full music. This amp is built like a tank. Very reliable. The amp produces very musical yet solid music. Physical condition is fine for the age, with typical wear and scratches. Some scratches are a bit deep. Ill double box and ship worldwide. The specs are: Description: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR). 4 WBT multiway binding posts. Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW). Frequency response: 10Hz-20kHz, ±0.5dB. THD+N: <0.2% at full rated power into 8 ohms (1kHz). Input sensitivity for full output: 1.15V. Input impedance: 100k ohms. Voltage gain: 30dB.Dimensions: 17 W by 4.5 H by 14 D. Weight: 35 lbs. I have other audio equipment, like Accuphase, Acurus, Adcom, Aragon, Arcam, Audio Research, Audioquest, Ayre, B&K, B&O, Bang Olufson, B&W, Bowers Wilkins, Bryston, California Audio Labs, Cary, Classe, Cambridge, Carver, Conrad Johnson, Creek, Denon, Dynaco, Dynaudio, Goldmund, Infinity, Jadis, JBL, Jolida, JM Lab, Kef, Kimber, Klipsch, Krell, Levinson, Lexicon, Linn, Marantz, Martin Logan, Mccormack, Mcintosh, Meridian, MIT, Musical Fidelity, Music Hall, NAD, Naim, Nakamichi, NHT, Paradigm, Parasound, Pass, Pioneer, Proceed, PS Audio, PSB, Quad, Rega, Revel, Rotel, Rowland, Sonic Frontiers, Sonus Faber, Spendor, Sunfire, Tandberg, Tannoy, Theta, Thiel, Threshold, Totem, Transparent, Vandersteen, Vmps, VPI, VTL, Velodyne, AR, Audio, Audiophile, Amplifier, Amps, Arcam, Acurus, Aragon, Adcom, ADS, Advent, Bose, Boston, Beovox, Bryston, Bedini, B&K, B&0, B&W, Bowers & Wilkins, Celestion, Counterpoint, Canton, Cello, Creek, Cerwin Vega, Dahlquist, Denon, Dcm, Dynaco, Dynaudio, Ess, Spica, Epicure, Ensemble, Electrostatic, Elite, Fisher, Fosgate, Harman kardon , Harbeth , Integra, Infinity, JBL, Jadis, Jolida, Linn, Luxman, KEF, Klipsch , KLH, Krell, Kenwood, Martin Logan, McIntosh, Mirage, Mission, Monitor Audio, Nad , Onkyo , Paradigm, Proac, Sony, Pioneer, Polk-Audio, Preamplifier, Quad ,Rogers, Rotel, Rega, Stanton, Speakers, Audio,Stereo,Studio, Vandersteen,, Snell, Spendor, Thorens, Vandersteen, Wharfedale, Yamaha, Speakers, Turntable, M&K, Accuphase, Dali, Wilson Audio, Sonus Faber, Definitive Technology, PSB, NHT, Magnepan, Eminent Technology, Monitor Audio, Vienna Acoustic, Meridian, Behringer, Acoustat, Genesis, Opera, Mirage, Energy, Pinnacle, Musical Fidelity, Sonic Frontiers, Cambridge Audio, Sunfire, Velodyne, SVS, HSU Research, Audio Research, Tannoy, Subwoofer, McCormack, Meadowlark, Conrad Johnson, Parasound, Magneplanar, Audible Illusions, Mark Levinson, Vintage, REL, Revel, Nakamichi, ESS, Emotiva.

### The Audio Board: www.theAudioBoard.com - The Search Tool for Used High-End Audio Equipment### I sold and shipped the amp to the buyer but he changed mind. The amp worked great; no issues. So, I am re-listing here. For sale is a high-performance PS Audio HCA-2 Hybrid Class A Stereo Power Amplifier It is in original box, with manual and heavy-duty power cord. I personally tested this amp, and found it worked great. Both channels produced good full music. This amp is built like a tank. Very reliable. The amp produces very musical yet solid music. Physical condition is fine for the age, with typical wear and scratches. Some scratches are a bit deep. Ill double box and ship worldwide. The specs are: Description: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR). 4 WBT multiway binding posts. Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW). Frequency response: 10Hz-20kHz, ±0.5dB. THD+N: <0.2% at full rated power into 8 ohms (1kHz). Input sensitivity for full output: 1.15V. Input impedance: 100k ohms. Voltage gain: 30dB.Dimensions: 17 W by 4.5 H by 14 D. Weight: 35 lbs. I have other audio equipment, like Accuphase, Acurus, Adcom, Aragon, Arcam, Audio Research, Audioquest, Ayre, B&K, B&O, Bang Olufson, B&W, Bowers Wilkins, Bryston, California Audio Labs, Cary, Classe, Cambridge, Carver, Conrad Johnson, Creek, Denon, Dynaco, Dynaudio, Goldmund, Infinity, Jadis, JBL, Jolida, JM Lab, Kef, Kimber, Klipsch, Krell, Levinson, Lexicon, Linn, Marantz, Martin Logan, Mccormack, Mcintosh, Meridian, MIT, Musical Fidelity, Music Hall, NAD, Naim, Nakamichi, NHT, Paradigm, Parasound, Pass, Pioneer, Proceed, PS Audio, PSB, Quad, Rega, Revel, Rotel, Rowland, Sonic Frontiers, Sonus Faber, Spendor, Sunfire, Tandberg, Tannoy, Theta, Thiel, Threshold, Totem, Transparent, Vandersteen, Vmps, VPI, VTL, Velodyne, AR, Audio, Audiophile, Amplifier, Amps, Arcam, Acurus, Aragon, Adcom, ADS, Advent, Bose, Boston, Beovox, Bryston, Bedini, B&K, B&0, B&W, Bowers & Wilkins, Celestion, Counterpoint, Canton, Cello, Creek, Cerwin Vega, Dahlquist, Denon, Dcm, Dynaco, Dynaudio, Ess, Spica, Epicure, Ensemble, Electrostatic, Elite, Fisher, Fosgate, Harman kardon , Harbeth , Integra, Infinity, JBL, Jadis, Jolida, Linn, Luxman, KEF, Klipsch , KLH, Krell, Kenwood, Martin Logan, McIntosh, Mirage, Mission, Monitor Audio, Nad , Onkyo , Paradigm, Proac, Sony, Pioneer, Polk-Audio, Preamplifier, Quad ,Rogers, Rotel, Rega, Stanton, Speakers, Audio,Stereo,Studio, Vandersteen,, Snell, Spendor, Thorens, Vandersteen, Wharfedale, Yamaha, Speakers, Turntable, M&K, Accuphase, Dali, Wilson Audio, Sonus Faber, Definitive Technology, PSB, NHT, Magnepan, Eminent Technology, Monitor Audio, Vienna Acoustic, Meridian, Behringer, Acoustat, Genesis, Opera, Mirage, Energy, Pinnacle, Musical Fidelity, Sonic Frontiers, Cambridge Audio, Sunfire, Velodyne, SVS, HSU Research, Audio Research, Tannoy, Subwoofer, McCormack, Meadowlark, Conrad Johnson, Parasound, Magneplanar, Audible Illusions, Mark Levinson, Vintage, REL, Revel, Nakamichi, ESS, Emotiva.

I bought this from the estate of an audiophile. This PS Audio HCA-2 stereo power amplifier is in great condition and it sounds great. I let it run for 2 hours while I enjoyed it and it didnt even get warm. When I moved it and tilted on its side I could hear something heavy move inside, so I took the cover off and a very large coil inside the unit is not firmly affixed to the case (see photo). When I ship it I will unplug the coil and wrap it separately so it doesnt get damaged. Here is a 2003 review from Gary Krakow NBC News: PS Audio’s HCA-2: You may have read about this in some of the hi-fi specialty magazines. It is light in weight (35 pounds), but the unique, heavy-duty circuitry produces 150 beautiful sounding watts per channel and it never, ever breaks a sweat. It always remains cool to the touch on the outside. This is one of the most neutral sounding amps that I’ve ever auditioned; it produces bass that has to be heard to be believed. Worth every penny of its $1,695 asking price. For shipping information, click on the shipping tab on the listing page and fill in your information.

### The Audio Board: www.theAudioBoard.com - The Search Tool for Used High-End Audio Equipment### I sold and shipped the amp to the buyer but he changed mind. The amp worked great; no issues. So, I am re-listing here. For sale is a high-performance PS Audio HCA-2 Hybrid Class A Stereo Power Amplifier It is in original box, with manual and heavy-duty power cord. I personally tested this amp, and found it worked great. Both channels produced good full music. This amp is built like a tank. Very reliable. The amp produces very musical yet solid music. Physical condition is fine for the age, with typical wear and scratches. Some scratches are a bit deep. Ill double box and ship worldwide. The specs are: Description: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR). 4 WBT multiway binding posts. Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW). Frequency response: 10Hz-20kHz, ±0.5dB. THD+N: <0.2% at full rated power into 8 ohms (1kHz). Input sensitivity for full output: 1.15V. Input impedance: 100k ohms. Voltage gain: 30dB.Dimensions: 17 W by 4.5 H by 14 D. Weight: 35 lbs. I have other audio equipment, like Accuphase, Acurus, Adcom, Aragon, Arcam, Audio Research, Audioquest, Ayre, B&K, B&O, Bang Olufson, B&W, Bowers Wilkins, Bryston, California Audio Labs, Cary, Classe, Cambridge, Carver, Conrad Johnson, Creek, Denon, Dynaco, Dynaudio, Goldmund, Infinity, Jadis, JBL, Jolida, JM Lab, Kef, Kimber, Klipsch, Krell, Levinson, Lexicon, Linn, Marantz, Martin Logan, Mccormack, Mcintosh, Meridian, MIT, Musical Fidelity, Music Hall, NAD, Naim, Nakamichi, NHT, Paradigm, Parasound, Pass, Pioneer, Proceed, PS Audio, PSB, Quad, Rega, Revel, Rotel, Rowland, Sonic Frontiers, Sonus Faber, Spendor, Sunfire, Tandberg, Tannoy, Theta, Thiel, Threshold, Totem, Transparent, Vandersteen, Vmps, VPI, VTL, Velodyne, AR, Audio, Audiophile, Amplifier, Amps, Arcam, Acurus, Aragon, Adcom, ADS, Advent, Bose, Boston, Beovox, Bryston, Bedini, B&K, B&0, B&W, Bowers & Wilkins, Celestion, Counterpoint, Canton, Cello, Creek, Cerwin Vega, Dahlquist, Denon, Dcm, Dynaco, Dynaudio, Ess, Spica, Epicure, Ensemble, Electrostatic, Elite, Fisher, Fosgate, Harman kardon , Harbeth , Integra, Infinity, JBL, Jadis, Jolida, Linn, Luxman, KEF, Klipsch , KLH, Krell, Kenwood, Martin Logan, McIntosh, Mirage, Mission, Monitor Audio, Nad , Onkyo , Paradigm, Proac, Sony, Pioneer, Polk-Audio, Preamplifier, Quad ,Rogers, Rotel, Rega, Stanton, Speakers, Audio,Stereo,Studio, Vandersteen,, Snell, Spendor, Thorens, Vandersteen, Wharfedale, Yamaha, Speakers, Turntable, M&K, Accuphase, Dali, Wilson Audio, Sonus Faber, Definitive Technology, PSB, NHT, Magnepan, Eminent Technology, Monitor Audio, Vienna Acoustic, Meridian, Behringer, Acoustat, Genesis, Opera, Mirage, Energy, Pinnacle, Musical Fidelity, Sonic Frontiers, Cambridge Audio, Sunfire, Velodyne, SVS, HSU Research, Audio Research, Tannoy, Subwoofer, McCormack, Meadowlark, Conrad Johnson, Parasound, Magneplanar, Audible Illusions, Mark Levinson, Vintage, REL, Revel, Nakamichi, ESS, Emotiva.

I bought this from the estate of an audiophile. This PS Audio HCA-2 stereo power amplifier is in great condition and it sounds great. I let it run for 2 hours while I enjoyed it and it didnt even get warm. When I moved it and tilted on its side I could hear something heavy move inside, so I took the cover off and a very large coil inside the unit is not firmly affixed to the case (see photo). When I ship it I will unplug the coil and wrap it separately so it doesnt get damaged. Here is a 2003 review from Gary Krakow NBC News: PS Audio’s HCA-2: You may have read about this in some of the hi-fi specialty magazines. It is light in weight (35 pounds), but the unique, heavy-duty circuitry produces 150 beautiful sounding watts per channel and it never, ever breaks a sweat. It always remains cool to the touch on the outside. This is one of the most neutral sounding amps that I’ve ever auditioned; it produces bass that has to be heard to be believed. Worth every penny of its $1,695 asking price. For shipping information, click on the shipping tab on the listing page and fill in your information.

### The Audio Board: www.theAudioBoard.com - The Search Tool for Used High-End Audio Equipment### I sold and shipped the amp to the buyer but he changed mind. The amp worked great; no issues. So, I am re-listing here. For sale is a high-performance PS Audio HCA-2 Hybrid Class A Stereo Power Amplifier It is in original box, with manual and heavy-duty power cord. I personally tested this amp, and found it worked great. Both channels produced good full music. This amp is built like a tank. Very reliable. The amp produces very musical yet solid music. Physical condition is fine for the age, with typical wear and scratches. Some scratches are a bit deep. Ill double box and ship worldwide. The specs are: Description: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR). 4 WBT multiway binding posts. Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW). Frequency response: 10Hz-20kHz, ±0.5dB. THD+N: <0.2% at full rated power into 8 ohms (1kHz). Input sensitivity for full output: 1.15V. Input impedance: 100k ohms. Voltage gain: 30dB.Dimensions: 17 W by 4.5 H by 14 D. Weight: 35 lbs. I have other audio equipment, like Accuphase, Acurus, Adcom, Aragon, Arcam, Audio Research, Audioquest, Ayre, B&K, B&O, Bang Olufson, B&W, Bowers Wilkins, Bryston, California Audio Labs, Cary, Classe, Cambridge, Carver, Conrad Johnson, Creek, Denon, Dynaco, Dynaudio, Goldmund, Infinity, Jadis, JBL, Jolida, JM Lab, Kef, Kimber, Klipsch, Krell, Levinson, Lexicon, Linn, Marantz, Martin Logan, Mccormack, Mcintosh, Meridian, MIT, Musical Fidelity, Music Hall, NAD, Naim, Nakamichi, NHT, Paradigm, Parasound, Pass, Pioneer, Proceed, PS Audio, PSB, Quad, Rega, Revel, Rotel, Rowland, Sonic Frontiers, Sonus Faber, Spendor, Sunfire, Tandberg, Tannoy, Theta, Thiel, Threshold, Totem, Transparent, Vandersteen, Vmps, VPI, VTL, Velodyne, AR, Audio, Audiophile, Amplifier, Amps, Arcam, Acurus, Aragon, Adcom, ADS, Advent, Bose, Boston, Beovox, Bryston, Bedini, B&K, B&0, B&W, Bowers & Wilkins, Celestion, Counterpoint, Canton, Cello, Creek, Cerwin Vega, Dahlquist, Denon, Dcm, Dynaco, Dynaudio, Ess, Spica, Epicure, Ensemble, Electrostatic, Elite, Fisher, Fosgate, Harman kardon , Harbeth , Integra, Infinity, JBL, Jadis, Jolida, Linn, Luxman, KEF, Klipsch , KLH, Krell, Kenwood, Martin Logan, McIntosh, Mirage, Mission, Monitor Audio, Nad , Onkyo , Paradigm, Proac, Sony, Pioneer, Polk-Audio, Preamplifier, Quad ,Rogers, Rotel, Rega, Stanton, Speakers, Audio,Stereo,Studio, Vandersteen,, Snell, Spendor, Thorens, Vandersteen, Wharfedale, Yamaha, Speakers, Turntable, M&K, Accuphase, Dali, Wilson Audio, Sonus Faber, Definitive Technology, PSB, NHT, Magnepan, Eminent Technology, Monitor Audio, Vienna Acoustic, Meridian, Behringer, Acoustat, Genesis, Opera, Mirage, Energy, Pinnacle, Musical Fidelity, Sonic Frontiers, Cambridge Audio, Sunfire, Velodyne, SVS, HSU Research, Audio Research, Tannoy, Subwoofer, McCormack, Meadowlark, Conrad Johnson, Parasound, Magneplanar, Audible Illusions, Mark Levinson, Vintage, REL, Revel, Nakamichi, ESS, Emotiva.

### The Audio Board: www.theAudioBoard.com - The Search Tool for Used High-End Audio Equipment### I sold and shipped the amp to the buyer but he changed mind. The amp worked great; no issues. So, I am re-listing here. For sale is a high-performance PS Audio HCA-2 Hybrid Class A Stereo Power Amplifier It is in original box, with manual and heavy-duty power cord. I personally tested this amp, and found it worked great. Both channels produced good full music. This amp is built like a tank. Very reliable. The amp produces very musical yet solid music. Physical condition is fine for the age, with typical wear and scratches. Some scratches are a bit deep. Ill double box and ship worldwide. The specs are: Description: Solid-state, two-channel Hybrid class-A power amplifier with class-D switching (SDAT) output stage. Inputs: 2 pairs line-level (1 pair RCA, 1 pair XLR). 4 WBT multiway binding posts. Power output: 150Wpc into 8 ohms (21.8dBW), 225Wpc into 4 ohms (20.5dBW), 275Wpc into 2 ohms (18.3dBW). Frequency response: 10Hz-20kHz, ±0.5dB. THD+N: <0.2% at full rated power into 8 ohms (1kHz). Input sensitivity for full output: 1.15V. Input impedance: 100k ohms. Voltage gain: 30dB.Dimensions: 17 W by 4.5 H by 14 D. Weight: 35 lbs. I have other audio equipment, like Accuphase, Acurus, Adcom, Aragon, Arcam, Audio Research, Audioquest, Ayre, B&K, B&O, Bang Olufson, B&W, Bowers Wilkins, Bryston, California Audio Labs, Cary, Classe, Cambridge, Carver, Conrad Johnson, Creek, Denon, Dynaco, Dynaudio, Goldmund, Infinity, Jadis, JBL, Jolida, JM Lab, Kef, Kimber, Klipsch, Krell, Levinson, Lexicon, Linn, Marantz, Martin Logan, Mccormack, Mcintosh, Meridian, MIT, Musical Fidelity, Music Hall, NAD, Naim, Nakamichi, NHT, Paradigm, Parasound, Pass, Pioneer, Proceed, PS Audio, PSB, Quad, Rega, Revel, Rotel, Rowland, Sonic Frontiers, Sonus Faber, Spendor, Sunfire, Tandberg, Tannoy, Theta, Thiel, Threshold, Totem, Transparent, Vandersteen, Vmps, VPI, VTL, Velodyne, AR, Audio, Audiophile, Amplifier, Amps, Arcam, Acurus, Aragon, Adcom, ADS, Advent, Bose, Boston, Beovox, Bryston, Bedini, B&K, B&0, B&W, Bowers & Wilkins, Celestion, Counterpoint, Canton, Cello, Creek, Cerwin Vega, Dahlquist, Denon, Dcm, Dynaco, Dynaudio, Ess, Spica, Epicure, Ensemble, Electrostatic, Elite, Fisher, Fosgate, Harman kardon , Harbeth , Integra, Infinity, JBL, Jadis, Jolida, Linn, Luxman, KEF, Klipsch , KLH, Krell, Kenwood, Martin Logan, McIntosh, Mirage, Mission, Monitor Audio, Nad , Onkyo , Paradigm, Proac, Sony, Pioneer, Polk-Audio, Preamplifier, Quad ,Rogers, Rotel, Rega, Stanton, Speakers, Audio,Stereo,Studio, Vandersteen,, Snell, Spendor, Thorens, Vandersteen, Wharfedale, Yamaha, Speakers, Turntable, M&K, Accuphase, Dali, Wilson Audio, Sonus Faber, Definitive Technology, PSB, NHT, Magnepan, Eminent Technology, Monitor Audio, Vienna Acoustic, Meridian, Behringer, Acoustat, Genesis, Opera, Mirage, Energy, Pinnacle, Musical Fidelity, Sonic Frontiers, Cambridge Audio, Sunfire, Velodyne, SVS, HSU Research, Audio Research, Tannoy, Subwoofer, McCormack, Meadowlark, Conrad Johnson, Parasound, Magneplanar, Audible Illusions, Mark Levinson, Vintage, REL, Revel, Nakamichi, ESS, Emotiva.