Audio Proz Service and Sales


APT Power Amplifier 1

Audio Proz Inv #: 71498

High quality basic power amplifier done correctly. Features Audio Pro Level III Update. Upgraded - all Power Supply caps, all audio caps, new relay, updated DC servo circuit and relay timer circuit . Very low use unit. Has later version Rev 4 board. #9 condition

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Apt Power Amplifier 1

Audio Proz Inv #: 70843

Serial number: E03924. Level III Mod - Upgraded: all P.S. caps, all audio caps, relay, relay drive circuit, amplifier EQ circuit, DC servo circuit. Condition 9

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NAD 3140 Integrated Amp

Audio Proz Inv #: 71899

80 watt stereo. Full feature design. Listen tape selector. Gun green face (metal). Variable low bass EQ. LED. Excellent phono input with cartridge loading circuit. Soft clip circuit. Double up on power switch. Unit has minor thump on turnoff (no relays) - by design. Low use machine. Ruggedized board soldering. Some NAD grades done. Taiwan version machine. Better caps, but power supply was redone with about 20 upgraded parts. Condition 8+

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Acurus DIA 100 MkII

Audio Proz Inv #: 71892

High quality "audiophile" integrated amp. Passive pre-amp. High quality parts. (2) tape loops. (4) line (stereo) inputs. AC cord in box. Banana post speaker connectors. All cleaned and serviced. **NO PHONO** Black face. Grey silver knobs. Condition 9

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B&K Reference 2200 Stereo Power Amp

Audio Proz Inv #: 71589

220 watts per channel (2) XLR IN, (2) RCA IN, 2 channel speaker out banana post. Low use, basic service bench tested, cleaned switches. Condition #9

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Need your guitar or bass amp tuned up? We are now doing repairs, upgrades, and modifications to all types of guitar amps. Orange, Mesa Boogie, Fender, Marshall, Hughes and Kettner, Peavey, Ampeg, Gibson, Silvertone, etc. Read more about it here


Marantz 1070

Audio Proz Inv #: 72106

Integrated Amplifier, 35 Watts / Channel, Vintage Silver Face w/ Black Inset, Inputs: Mic, Phono, Tuner, Aux, Tape 1 & 2, 3 Band Tone Control (Bass / Mid / Treble), Hi / Low Filter Loudness, 2 Speaker Switching w/ Ambience Function, All Capacitors Checked Throughout Unit, Unit Uses Better Low Noise Transistors in Phono Preamp by Factory Design, Working to All Spec, RFI Suppressor Caps in Phono Pre Stage), Very Nice Vintage Marantz, Condition #9 

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Carver A-500X

Audio Proz Inv #: 72392

High power amplifier 19" rack mount handles, 250/watts/channel 8 ohm, High quality Capacitors, double sided boards, input level control (L+R), Stereo/mono switch, vintage style watt meters (switchable range) Truly an excellent design, double sided circuit boards, dual power supply, runs cool, modified power switch with double contacts, cleaned all controls and switches, calibration bias set, minor scratches on cover, Condition #9

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GLI Pro GA-75 Stereo Power Amp

Audio Proz Inv #: 35443

3 space rack design with large VU  meters  (vinc unit)   Awesome very well built high current 100 watt amp with meters and level controls, 2 speaker switches. *** Modified power supply, Improved upgrade audiophile grounding done***. 

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McIntosh MA 6100 Preamp Amplifier

Audio Proz Inv #: 72297

Integrated Preamp/ Amplifier. Bass & Treble controls have independent right/left balance for both. Input selector includes Aux, Tuner 1 & 2, Phono 1 & 2, Tape HD. Mode Selector includes L to L&R, R to L&R, Stereo, Mono (L+R) L+R to L, L+R to R, Panloc. Tape Copy/ monitor functions. Only a few capacitors replaced, all others check out perfect (unit uses many Japanese caps). Fixed and tightened connectors. Added silver solder to edge connectors. Face glass is near perfect.Very clean unit with only minor signs of use. Only light wear, no broken parts. Unit is fully functional & Works excellently. No Wooden case. Minor oxidation on rear connectors. #8+ condition.

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ADCOM GFA 6000 Multi-Channel Power Amplifier

Audio Proz Inv #: 72819

Comes with owners manual. Speaker outputs: Center, Left Rear, Right Rear, Left, Right. All outputs have individual level controls. Independent RCA inputs for each channel. High quality blue boards with high quality capacitors throughout unit. Excellent, rugged board soldering. Very low use unit, incredibly clean cosmetically & Fully functional. All controls and connectors are clean and undamaged. All channels work excellently. All lights work and bulbs are in good shape. #9 condition.

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APT 1

Audio Proz Inv #: 61098

The APT 1 Power Amplifier Owner's Manual. In like new condition. Includes schematic. #9.  

$ 12  Contact Us  


Re: International Shipping: We ship internationally often and have yet to encounter a problem or complaint. We are very careful to test the equipment before it’s packed and then to double box the machine with added protection when needed for front panels, etc. We are not amateurs or an ebay store; we know these machines very well and know what it takes to get them to you safely. We use USPS priority internationally which seems to be the cheapest. If you prefer another carrier (you should know who delivers to your area reliably) please let us know. Also please be aware of any tariffs that you may be responsible for upon pick up on your end. International shipping may be expensive but we will make sure it is not a headache on top of the cost. PLEASE NOTE THAT SHIPPING INTERNATIONALLY WILL BE A MINIMUM OF $16 EVEN FOR SMALL PARTS.


Raymer, True tone electronics 804-100

Audio Proz Inv #: 62481

Solid State PA type AMP. Bass, Treble, Master volume controls. Mike input (Hi Z/Low Z), Music (aux) Input. 6.2 OHM, 16 OHM, 50 OHM, TAPS (25V, 40V, 70V). 70 Vault, 60 WATT. As is needs service but easy to service. #8 condition.

$ 18  Contact Us  

Rolls PM52

Audio Proz Inv #: 53145

passive headphone tap, power amp loop, mono/stereo selection, 2 headphone out, condition

$ 32  Contact Us  

Rocktron Rampage R10 Amp

Audio Proz Inv #: 57679

10 watts, 6" speaker. Unit has low use time. Features headphone jack and overdrive effect; overdrive has been modified to be less aggressive with lower noise. Condition: 9

$ 48  Contact Us  

Rocket fish kit RF WHT1B

Audio Proz Inv #: 59337

Simple add on to speaker wire and RF wireless jump to second receiver (AMP, with delay) time correction. OK product for small budged. Condition #9

$ 66  Contact Us  

Dayton SA70 Subwoofer Module

Audio Proz Inv #: 42313

45 watts RMS @ 8ohm, 70 watts RMS @ 4ohm. Built in crossover, live level and speaker level inputs, pass-thru speaker in/out, auto on/off switch. For speaker building. NEW STOCK with original box and packing.

$ 80  Contact Us  

Realistic MPA-40

Audio Proz Inv #: 50081

35watt PA amplifier with two mic inputs and aux/phono inputs. Transformer output stage and nice EQ section good for voice or guitar. Excellent condition.

$ 80  Contact Us  


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We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


Realistic MPA-20

Audio Proz Inv #: 46431

Mono 20watt mixer and amplifier, very compact and can run on 12v battery! Aux/phono/two mic phone input connectors. Also works well as a guitar amp to mix in effects! Excellent condition, professionally cleaned and serviced.

$ 88  Contact Us  

Kenwood SS-79 AV Surround Amp

Audio Proz Inv #: 56567

Combination surround sound processor and 15 watt amplifier with Dolby stereo. Designed to add on to any stereo and create surround sound for spatial settings. Black slim-line all metal construction. Condition: 9

$ 88  Contact Us  

Alesis Microcue Amp

Audio Proz Inv #: 53135

2 stereo inputs, stereo line out, 2 headphone out, 9 volt power supply provided, low use, condition #9

$ 88  Contact Us  

Tascam MH-40

Audio Proz Inv #: 61121

Multi-headphones amplifier.  Input level control.  4 channels with independent level controls.  Channels 1 and 2 have balance control.  Channels 3 and 4 balance knob has been snapped off.  Input level matcher control on rear panel.  Fully serviced and working well.  COsmetic issues are the previous mentioned knobs snapped off, power button has been replaced, input knob is damaged but functional.  Top cover has some scratches and is tarnished in one area.  Well designed unit.

$ 88  Contact Us  

Realistic MPA-45

Audio Proz Inv #: 42651

small compact mixer amp, 3 band eq section, 2 mic phone Ins, basic 60 watts PA system with a very rugged design

$ 90  Contact Us  

Sonance A150

Audio Proz Inv #: 62828

Subwoofer Mono Power Amplifier. 0 and 180 degree phase switch. 50-150HZ frequency. #8 condition.

$ 100  Contact Us  


Please be aware there is a minimum $4-$6 to ship any part. International orders will be $14-$16 to ship for anything larger than an envelope. Shipping costs are non negotiable, so please, PLEASE do not ask for a part, or for us to search for, or quantify a part if you cannot pay for the shipping.


Sony TA-AX2

Audio Proz Inv #: 23047

40W x 2, New Power IC Pack, Excellent Quality Circuit Mechanincal Design, Nice Audio Quality

$ 110  Contact Us  

Behringer HA-4700 Powerplay Pro-XL

Audio Proz Inv #: 38800

Powerplay Pro XL 4 channel Headphone amp. More units are available

$ 110  Contact Us