Audio Proz Service and Sales


Onkyo Integra A-8190

Audio Proz Inv #: 62193

Integrated stereo amplifier. 100 watts /8 ohm. 6 Stereo Line In's + Phono MM/ MC  Complete shop service; cleaning and calibration. VERY LOW USE, Well made unit , #8+ condition

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AIR TIGHT Model ATM-3

Audio Proz Inv #: 61689

Tube design Mono block Power Amplifier  (SN: 09209)  Beautiful Silver brushed aluminum face with white VU meter, attenuator control, and 7 position bias control. RCA inputs , 2-4 Ohm & 6-8 ohm  output posts. (has working tube set installed mostly for demo purposes, customer may want t install new set) Fully shop serviced, clean and calibration. Excellent condition cosmetics #8+ (few very minor top & side scuffs)

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Bogen DB20 Series Y-26

Audio Proz Inv #: 61437

Mono tube amplifier. loudness contour switch adjustable -30 db -0b bass, treble. Inputs: Tape, aux, radio LP: AES, NAB, RIAA. All controls clean and good! No leakage around filters caps, (recommended replacement  re-cap). Output tubes: Good, getting slightly hazed, but still has life! GE back plate 6L6 Slightly soft, All tube sockets should to be cleaned. 5U4G needs replacing to operate. Paint very good, nice cosmetics, (bottom scratched). Very well done mono tube and excellent noise floor less than 5 mV. #8+ condition.

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Phase linear 200 solid state amplifier

Audio Proz Inv #: 62242

Meter range 0db/-10db, velocity feedback rear panel switches. LED front panel peak responding meters for channels A, B. Cleaned, tested resoldered on 1/17/18. 1 speaker jack tab replaced. Faceplate, cosmetics look great, LED meters fully functional, unit has seen very low use, good condition. Faceplate snapped off from interior plastic braces, glued, repaired, looks good. #9 (original box and packing)

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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 

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We know you have many options for purchasing audio equipment and parts, and we truly appreciate your business.  We strive to offer good products at competitive prices.  While we can't always match the prices of one isolated reseller, we make up for it by carefully selecting, testing, and finding unique and special rare parts, and we are here for the long run.  We guarantee everything we sell and we hope it helps you to enjoy a great listening experience.

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.


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. 

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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

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Adcom GFA 545 II

Audio Proz Inv #: 63474

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

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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 

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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 

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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.

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Email Us or call (617) 926-8020 for more information about ADA modifications and repairs.


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.

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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 !

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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.

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Marantz PM 8004 Stereo Integrated Amplifier

Audio Proz Inv #: 64247

Black Face, 70 WATTS x 2  @8 OHM. Bass, Mid, Treble, Balance control, INPUTS: Phono, CD, Tuner, AUX, Recorder 1+2. Pre Out: main In. Heavy duty audiophile binding posts, with remote control (but missing battery cover). RC 003pm , Good #9 condition. (right rear foot not original but matches close, front face panel has small ding/chip). *Unit has modifications to tighten relays*

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Niles SI-275 Power Amp

Audio Proz Inv #: 64269

2 channel design, 75 watt @ 8 ohm. Highest quality parts, relays, 3 pairs of output transistors - High S.O.A , Low noise -High dampening.  Super Audiophile Grade Unit !  Low use #9 condition

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ADCOM GFA-5300

Audio Proz Inv #: 64288

2  channel Power Amp  80 watts @ 8 ohms. RCA in's , Banana Post out's.  Hi Quality very well designed unit, low use  #9 condition

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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.


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

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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

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Pioneer SA-9100 Integrated Amp

Audio Proz Inv #: 70158

2 phono in, Multi-band tone controls, Truly one of the best vintage designs, One of the best condition units we have seen, Capacitors in this unit have seen very low use time (no off-spec caps), Low noise headphone, Minor ground mods, Upgraded tone control/EQ transistor, Low noise, Low use, Cleaned and calibrated, Condition #9 (see our listing TX-9100 AM FM Tuner #70152)

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APT AMP 1

Audio Proz Inv #: 70548

120 watt/channel. Level III mod update - FET update Circuit / All audio and power supply caps upgraded / Regulator D51 update. Super quiet. Low Use (Face has very minor ding at edge.) Condition #9 We offer this Level III upgrade service see here: https://www.audioproz.com/AP.php?Article=64

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Yamaha A-520

Audio Proz Inv #: 70916

Integrated amplifier (1985 vintage) Black face panel. 75 watts per channel. Audiophile grade amp and parts. Has external RCA outs! Speakers A/B Bass Treble + Balance controls. Inputs: Tape 1, 2, Aux, Tuner, CD, Phono w/ switchable mm/mc. Variable loudness. Resoldered grounds + cleaned controls and switches. Good condition all clean. Super quality amp! #9 condition. 

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Audio Research D-52

Audio Proz Inv #: 71402

Basic power amplifier  50 watts/channel   Silver 19" rack mountable with Black handles  4 Front mounted fuse holders for the +/- voltage rails for L and R channels. Unit currently is not functional and needs repair - needs custom proprietary AR pre-amp module  # 4405828969) Unit in fantastic condition cosmetically, but needs module to be fully functional  Due to this factored rated 8+ condition

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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


NAD 3240PE

Audio Proz Inv #: 71535

Nice basic design. Stereo amp. CD / Phono / Tuner / Tape / Video Inputs. Excellent phono. Soft clipping setting - power envelope. 4 or 8 ohm switchable. Better made Taiwanese machine. Complete service, resoldered and ruggedized board soldering, some cap changes. Condition 9

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Scott 299-B

Audio Proz Inv #: 71509

Vintage int. tube amp. Beautiful gold finish. Face panel in #10 condition. All lettering intact, not cooked! Impeccable mint condition. Slightly weaker left channel by 1 dB. Original telefunken tubes - no cooking time. Reformed caps, meets all original specs. Low noise floor. All original unit. Excellent specs. Condition 9+

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