Audio Proz Service and Sales


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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NAD Stereo Amplifier 3130

Audio Proz Inv #: 61711

A,B,A+B, speaker settings, Bass, Treble controls, CD, Phono, Tuner, Video/Tape 2 inputs. Better upgrade to many capacitors, and ruggedized board solder.  Unit has original transistors, good quality power supply capacitors, nice condition, clean faceplate. #9 condition 

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NAD S-200

Audio Proz Inv #: 52334

Stereo power amplifier, 200 watts per channel. Nice aluminum face, wow! XLR and RCA inputs. Excellent #9 condition, completely cleaned, serviced, tested with improved internal grounding.

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NAD C340

Audio Proz Inv #: 50281

Tape 1/ Tape 2, tuner, AUX, Video, CD, Disc, input selectors, bass, treble, tone, balance, volume, controls, high quality phono input, nice basic design, 80 Watt amp, discreet-transistor, high current design amp, missing remote, #8+ condition, minor face rub, re-soldered main circuit to make rugged, long term reliable

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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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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.


NAD 3150

Audio Proz Inv #: 50129

Very nice stereo integrated amplifier receiver with NAD-authorized updates done by AP, new board soldering, high quality replacement Japanese capacitors, fully serviced and tested. A/B speakers select, bass/treble control, mono select, tape1/tape2/phono/tuner/aux inputs. Very low use time, excellent cosmetics except for tiny rub on upper left corner.

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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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NAD 2100

Audio Proz Inv #: 61604

Power Amplifier. 2 speaker switching A/B. Input level control. Soft clipping circuit. Able to bridge mono. Updated

power supply. Installed 2 new relays-high grade. Low use, excellent condition. #9-

$ 268  Contact Us  

MR-1240 power amplifier SN 6139th

Audio Proz Inv #: 41463

12 channel - 6 zone - 35 watt per channel

$ 499  Contact Us  

Mitsubishi DA-A10

Audio Proz Inv #: 59763

Dual monaural construction. Stereo power amplifier. Back panel level control, 2 way speaker switch. New capacitors installed, including bypass capacitors. Good quality relays UPDATED. Nice condition, low use time. 9. We can do a capacitor rebuild on this model for $200-300.

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Mcintosh MC 2105

Audio Proz Inv #: 60607

Solid state power Amplifier. SN: AH4175. Luxury style power level meters (DB) for L+R channels, Stereo gain control and intuitive meter range selector. Fully serviced and tested, cleaned all controls/jacks 2 times. Replaced 2 low level transistors on preamp board for level controls. Cleaned board connectors. RCAs have typical oxidized look but function well. Unit specs out phenomenally, very low use time, noticeable crack on one corner of the faceplate, 1 inch in size. With all original box, packing, owners manual, factory harmonic distortion test graph. Cabinet can be made available. #8 condition

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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.


McIntosh Mac 1500 Receiver

Audio Proz Inv #: 54867

High quality tube receiver. Aux, FM Mono, FM Auto, Phono 1, Phono 2, Tape. Stereo/Mono switch, Tape Monitor in/out, LF/HF Filter Switches, Muting In/Out, Loud In/Out switches. Bass and Treble, Balance L/R, and Volume knobs. Silver Face in wood case. Just fully serviced. FM calibration. Helper caps added. Service history included. Includes owners manual.

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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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Maxi-Mouse Portable Guitar Amp

Audio Proz Inv #: 39841

Sidewalk Street Performer Guitar Amp, Treated Cone (Latex), w/AC charger. new batteries installed, all switches and controls cleaned, completly serviced, new input jacks installed. excellent cosmetic condition. SN:5903

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Marshall 9005

Audio Proz Inv #: 27842

4-space rack design Stereo power amp, full TUBE design, Audio Pro modified. Designed by Marshall the Guitar amp co. Dual EL 34, converted to home audio quality hifi amp. Ruggedized, fresh tubes, call for details.

$ 780  Contact Us  

Marlboro Guitar/Bass Amplifier #520B

Audio Proz Inv #: 27914

15"inch driver, inputs: bass/guitar/flat. Controls: volume/bass/treble. Modified power supply switch. (3x) ruggedized board, power on indicator lamp, tolex (black) with metal corners. Unit has been double checked.

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Marantz PM7200

Audio Proz Inv #: 59594

Stereo integrated amp with remote. CD/ tuner/ Aux 1/2, phono, 2 tape loops, 1 processor loop, speaker pairs 1&2. 9+/10 condition, did ruggedize board solder, calibration, low use! In box with main packing. Black face, very clean ergonomics.

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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.


Marantz PM-7200

Audio Proz Inv #: 39983

Integrate amplifier. Remote, Manual, and Box. Excellent modern audiophile build quality design. (modular boards/high quality parts). Input relay switching. 5 line input (1 tape, high quality phono). Basic Bass-Treble Eq. Class A. Mint Condition, Like new.

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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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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 

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Marantz Model 1070

Audio Proz Inv #: 41902

3 band graphic eq, 2 speaker out, preamp in/out. With new speaker relay, input transistors, 2x switch clean/flush, double-up power switching, 2 tape, 1 aux, tuner, phono and mic inputs. Beautiful craftsmanship with timeless design qualities. #9 condition.

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Marantz MM9000

Audio Proz Inv #: 55974

5 channel power amplifier. Front L, Front R, Center, Surr L, Surr R. RCA ins with level control. THX ultra. Peak LED indicator for each channel. Brushed black aluminum face. 8/10 condition. Center channel non functioning, minor scratches on top of face and cover has spare parts for channels.

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Marantz MA600

Audio Proz Inv #: 27429

Integrated Amp, 2 phono in, tuner in, aux in, 2 tape monito in, 2 independant speaker outs, 5 band EQ, excellent amplifier design - Nice Style. Modified to improve grounding and power supply, unit is all cleaned and serviced

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We leave "SOLD" items on our website for machines that we often repair and provide parts for. This is to give you an idea of the products we typically carry, and direct you to alternatives you may not know about - we often have substitutes for out-of-stock parts, and are happy to recommend workarounds and different solutions to common problems.


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  

Marantz 1072

Audio Proz Inv #: 40264

Integrated Amp, Excellent Design, Unit has scratches on knobs (needs new knobs to be perfect), all serviced, cleaned, excellent condition otherwise. Better circuit phono preamp.

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