Audio Proz Service and Sales


ART SLA- 2

Audio Proz Inv #: 62443

Stereo Power Amp, 200 watt per channel - Single rack space  Low noise, high current design, Modified with special internal shield for super low noise, also special bias check for stability. rear cooling fan, XLR & phone inputs. (fan can be made quieter) As new warranty with Original Box packing, (used 1-2 rental) #9-

$ 368  Contact Us  

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  

Sonance A150

Audio Proz Inv #: 62828

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

$ 100  Contact Us  

Yamaha G50 112II

Audio Proz Inv #: 63046

Guitar amplifier, w/distortion control mods, spring reverb, 3 band EQ, 2 ch, foot pedal (reverb, ch, EQ) Amp  comes with vinyl cover(Black)  Cleaned and serviced. Unit plays loud, Jazz tone, high quality and bright sounding! #9 Very Nice condition 

$ 285  Contact Us  

Marantz Model 32

Audio Proz Inv #: 63145

Power amplifier with Silver Faceplate. 60 watts per channel at 8 ohm. SN 1899, Board pulled and check redo any suspect solder, cleaned relay, all audio caps replaced if electrolytic. Virtually unused, set proper DC offset bias. #9- condition 

SOLD  Contact Us  

Contact us about similar items or replacement parts.


Local customers, please do not come to the shop without calling ahead first - (617) 926-8020 - for an appointment, so that we can more efficiently help you with your equipment or sound recording needs.

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.


Adcom GFA-535 II

Audio Proz Inv #: 63178

Top quality audiophile design dual power supply. 60 watts per channel. Slim line black, calibrarate test ok, low use #9 condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Parasound model 275 V2

Audio Proz Inv #: 63199

Slime Line 100 WATT AMP, excellent build quality!  Auto On/Off circuit, RCA IN's Banana Out's. #9 low use, AP serviced & tested, All Ok.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Technics SU-G90

Audio Proz Inv #: 63287

Stereo integrated amp, 90 watts per channel, Black face plate, Big volume knob. Phono, Tuner, Tape, TV, and DAT inputs. Prefer to sell with Tuner Technics ST-K50 INV#43678 (will discount price). Speaker B switch interrupts speaker A. Fully serviced, Low use time, needs power cable. #9 condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Yamaha MX-590

Audio Proz Inv #: 63326

Power Amplifier 3/4 size (11" wide). Champagne face gray metallic top and sides. Very high quality audiophile design, 50 watts per channel. RCA L/R input (1) Pair only outputs. Excellent basic amp, low use #9 condition 

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Sumo Nine Plus Class A Differential Power Amplifier

Audio Proz Inv #: 63459

Sumo 9+ Class A Differential Power Amplifier. Right channel has primary issue but both channels will likely need a repair. Fuses blowing on operation. Great cosmetics and the rest of the internals internals seem generally good. this would make a good platform for a custom modification or rack power amp as well. The case looks fantastic and has a nice edge to it with the angled rack handles. A real bold piece. We've seen new ones go over $1000. Customer sold to us because they did not want to go through with the repair and just buy a new unit.

$ 250  Contact Us  

Yamaha AX-596

Audio Proz Inv #: 63471

Aux, MD, Tape, CD, Tuner inputs. High quality Phono in. Audiophile quality amp preamp in/out. Digital input switch relay for each speaker. 60-80 watts per channel. This is a very serviceable unit! With remote. Low use #9 condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.


We are a very different kind of shop. To help ensure a smoother experience please read our letter about our current shop policies.

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.


Adcom GFA 545 II

Audio Proz Inv #: 63474

Nice Basic 80 watt amp (has Adcom factory circuit update). Low use #9 condition. All calibrated.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Yamaha M-35

Audio Proz Inv #: 63511

2/4 Channel power amp. 35 watts per channel. Left and Right speaker output level controls. Fully serviced, low use, refurbished relays. #8+ condition

$ 208  Contact Us  

Optonica SM-4545

Audio Proz Inv #: 63539

Top Quality Design, separate board modules 60-80 Watt per channel, full feature  3 speaker switch. Variable tone switch equalization , Silver face " Pioneer look" 2 tapes, aux, turner in, 2 phonos. Unit has been Audio pro modified with all boards, byPass power supply caps and corrected low noise ground.  9+ low use, Stunning the best !

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Heathkit Amplifier Model W-5M

Audio Proz Inv #: 63691

Mono tube amplifier, Unit has 2 6L6G tubes (older version) in usable condition installed (V3&V4 Position), Input tubes 12A47 (V1&V2), Output transformer is a LUX 5X-15 (Super X Series), Bass bar adjustment pot, Unit works but will need new caps to lower noise hum, Tested, Condition #8

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Marantz MA 600 DC Amplifier

Audio Proz Inv #: 63694

Vintage Silver Face design, (2) Phono (1) Aux (1) tuner (2) tape loops 5 band EQ & defeat switch, LED power meters, Low use machine. Audio Pro - improved, power supply grounding. Hi Quality circuit design, Low use, all service done. #9 condition 

$ 360  Contact Us  

Yamaha A-S500 Integrated Amplifier

Audio Proz Inv #: 63695

Nice Basic Audiophile Grade Unit ! Individual Relay Operated Speaker Outs. 85 x 2 WATTS  RMS !.  5 sets RCA in's (2) Tape loops, (3) line & (1) phono (optional I-dock port)  sub woofer out. #9 condition Black with Remote Control manual and Box, no packing.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Crown DC-300A Series III

Audio Proz Inv #: 63797

Power amplifier, gain controls for both channel 1 and 2, black faceplate. 2 space rack mount. Low use #8- condition, but cosmetic rust on back on screws. 

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Carver TFM-6CB

Audio Proz Inv #: 63813

Power Amplifier. Black faceplate, 65 watts per channel, left and right volume control. Extremely well made audiophile grade Japanese amplifier. (2 sets banana outs) (RCA IN's and LINE OUT)#9 very good condition 

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Audio Source Surround Processor 4 channel add on

Audio Proz Inv #: 63819

Actually very good SQ simulator for nice back channel ambiance. Line out is on master volume, fader adjusted front to rear. Machine can act as simple remote control volume for the 4 channels. #9

$ 128  Contact Us  

GK MB 115

Audio Proz Inv #: 63935

Bass Combo Amp. Passive/Active 1/4" inputs. Bass, Treble, Hi Mid, Low Mid controls (level). Cabinet has been dampened to improve Bass + smoothness of bass quality. Output: Master control + Boost, Limiter on/off, Horn on/off. Original woofer and Horn sweep tested, all OK. Aux in 1/8", Direct out XLR & headphone out 1/4". Nice sturdy but lightweight textured cabinet, with NEW G&K 200 watt, AMP MODULE INSTALLED #9 condition 

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Mackie M2600

Audio Proz Inv #: 64087

Power amp. 850x2 @4 Ohms. 3 space rack mount. Selectable crossover, (60Hz,90Hz,120Hz) thru/output XLR. 1/4" and XLR inputs. Includes special hi current 20 amp AC cord. Speakon and Banana outputs. Low use unit cleaned and tested #9 condition.

$ 448  Contact Us  

Parasound HCA-1200 II

Audio Proz Inv #: 64145

Super rugged Audiophile grade Power Amplifier, well done with a clean design. Has back panel level controls and heavy duty speaker relays. 200 watts /channel at 8 ohm. Unit does show some faceplate wear but Low use unit. #8 condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Behringer Europort PPA500BT

Audio Proz Inv #: 64173

Portable PA (2) 8" 2-way speakers, sweep tested OK, Mixer/AMP - 6 channel, 2 Mic in, 3 Stereo in RCA / 1/4", 3 1/8", Behringer USB Wireless port, bluetooth, 48v Phantom power, 5-band EQ & FX processor, Top latch closure broken, All function OK, Condition #8

SOLD  Contact Us  

Contact us about similar items or replacement parts.

AKAI AM-U03

Audio Proz Inv #: 64216

DC Stereo Integrated Amplifier. Installed R.F.I input protection caps on phono input. Unit has updated drive STK I.C. Unit has excellent designs of circuit board foils for ground shielding and reduced audio signal crosstalk. Complete service, updated relay. Unit has seen very low use time, unit has dual mono powersupply. High quality phono design. Tested, fully functional. Light signs of use on faceplate. Top & Bottom panels in excellent condition. Use 18 gauge wire for audio out. #8+ condition.

$ 328  Contact Us