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.