Audio Proz Service and Sales


QSC RMX 1850 HD

Audio Proz Inv #: 70731

Power ratings 350W - 8ohm, 600W - 4ohm, 900W - 2ohm, 1800W bridged 4 ohms. Barrier Strip, XLR and 1/4" input jacks. Speakon and binding post outputs. Has full features for bridging and soft limiting. Virtually no use time. Set proper bias and cleaned controls. Conditions #9.

$ 428  Contact Us  

Scott 459A Integrated amplifier

Audio Proz Inv #: 70590

45 watts per channel 8 ohms. Speaker A + B. 5 Band graphic EQ. Power Output meters (LEDs). Silver slim design. Inputs: Aux, Phono, Tuner, Tape 1 + 2. QC'd Nice sounding unit! Condition 9+.

$ 268  Contact Us  

Ashly Powerflex 6250

Audio Proz Inv #: 70573

Power amp. 80 Watts per channel. Channels 1-4 work properly. Channels 5 & 6 DO NOT TURN ON. AMP MODULE HAS BEEN REMOVED FROM UNIT. (Thermal indicators still turn on for ch 5 & 6 - but that's ok) Amp has been serviced. Condition #8

$ 300  Contact Us  

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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Marantz 1060

Audio Proz Inv #: 70540

Vintage Silver Face Integrated Amp,  Unit has had most of the amp board and preamp board re-capped (with upgrade corrected values) Low use machine. very vintage silk finish fancier knobs installed , (pre/main RCA jumpers installed.) #8+ condition ( We like these units and offer complete service and upgrades contact us at 617-926-8020 or sales@audioproz.com for more information)

$ 588  Contact Us  


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


Radio Shack MPA-101

Audio Proz Inv #: 70272

2 rack space. 100 watt. 5 channel input. (Mic, Phone, XLR, Phono, Aux) NEEDS CAP REPLACEMENT AND CLEAN #8 Condition.

$ 118  Contact Us  

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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QSC MX 700 Stereo Amplifier

Audio Proz Inv #: 70120

PA Amp, 4-8 ohm, 150-225W per channel, 2-space rack, 1/4" ins, banana outs, Left and right gain control, Rental unit - has not seen much use time, Modified low-noise fan, Condition #7+

$ 200  Contact Us  

B52 US-1200 Power Amp

Audio Proz Inv #: 64412

High quality audiophile-grade real power amp, XLR & 1/4" ins, Banana & Speakon outs, Condition New in box

$ 288  Contact Us  

B52 US-1200 Power Amp

Audio Proz Inv #: 64410

High quality audiophile-grade real power amp, XLR & 1/4" ins, Banana & Speakon outs, Condition New in box

$ 288  Contact Us  

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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All Remotes are now 25% off or Free Shipping!!!  (Reel to Reel remotes excluded).


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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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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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  

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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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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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  


We have been selling and repairing professional and consumer audio equipment for over 40 years. (Read some of our customers testimonials here)

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.


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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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  

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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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 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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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  


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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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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