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Amplifiers
( 256 Amplifiers sorted by Price High to Low.)
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Optonica SM-4545
# 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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Heathkit Amplifier Model W-5M
# 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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Yamaha A-S500 Integrated Amplifier
# 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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Crown DC-300A Series III
# 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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Carver TFM-6CB
# 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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If you are having trouble finding parts, enter the name into our search bar at the top of the page. Please be aware there is a minimum $4-$6 to ship any part. International orders will be $24-$26 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.
GK MB 115
# 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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Mackie M2600
# 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.
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Parasound HCA-1200 II
# 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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Behringer Europort PPA500BT
# 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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Harman/ Kardon Citation 7.1
# 73385
4 Channel power amp. 4 RCA inputs on back panel. Banana post, 3 way style speaker connects with pro spacing. Remote or manual turn on selector. Normal or bridge mode options. Very low use unit. Cosmetically excellent with almost no signs of wear. Functionally perfect. All channels & functions work. No broken parts, pristine unit. #9 Condition

Ground Lifted quadriture amp. Speaker grounds cannot be mixed through any switching boxes. (SOLD)
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Niles SI-275 Power Amp
# 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
# 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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Pioneer SA-9100 Integrated Amp
# 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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Marantz 1060
# 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 at617-926-8020 or sales@audioproz. Com for more information)
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APT AMP 1
# 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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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.
Adcom GFA-7400
# 70841
5 channel power amp. RCA inputs / channel. 5-way banana binding post speaker out. 12V DC trigger (on / off) input. Unit has minor problem - distortion LED front panel indicator light falsely lights, so was disconnected on channel 4. Amp has no problem. Test run is all perfect. Low use. Condition 9
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Apt Power Amplifier 1
# 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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Yamaha A-520
# 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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Phase Linear PL 400
# 70942
Vintage power amp. Large VU meters (All lamps functional) Silver face plate. 200 watts/channel. Unit is virtually mint and low use. Serviced resoldered and ruggedized ground + main board. Excellent condition! Low Use! 9+ condition.
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APT Power Amplifier 1
# 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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Scott 299-B
# 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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NAD 3240PE
# 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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B&K Reference 2200 Stereo Power Amp
# 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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Acurus DIA 100 MkII
# 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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NAD 3140 Integrated Amp
# 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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Marantz 1070
# 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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McIntosh MA 6100 Preamp Amplifier
# 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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Audio Research D-76 Tube Power Amplifier
# 72316
Comes with original instruction manual. Formerly cracked/ aged solder was repaired and ruggedized. All input connectors tightened and cleaned. Excellent, top quality transformers used in this unit. All tubes were pulled, pin connectors polished, cleaned and lubed with silicone. Tubes test excellently. New, 5 amp slow blow fuse put into unit. Beautiful, low use unit. Cosmetically and functionally excellent. Recently tested, cleaned and serviced. Cage cover does not currently fit over the top due to large tubes, tubes could be replaced with slightly smaller to fit cover. Some speaker terminals plastic shielding pieces cracked, will not affect units use in any way and are hidden by top cover when installed. #9 Condition.
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Rotel PC-1070 Stereo Control Amplifier
# 72319
Really nice Silver face design, Super High Quality build and parts, low noise op amps. Excellent double contact relay, Phono, CD, Tuner, (2) tape loops, (2) sets of RCA outs. Cleaned all controls and connectors, also excellent quality. All functions test good. Includes Original remote, tested good. Some cosmetic wear/ small scuffs on face & top cover, volume knob too. Function indicators are nice bright. #8- condition.
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Carver A-500X
# 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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