Audio Proz Service and Sales


Realistic MPA-20

Audio Proz Inv #: 46431

Mono 20watt mixer and amplifier, very compact and can run on 12v battery! Aux/phono/two mic phone input connectors. Also works well as a guitar amp to mix in effects! Excellent condition, professionally cleaned and serviced.

$ 88  Contact Us  

Realistic MPA-40

Audio Proz Inv #: 40384

3-channel, small industrial/performer unit, two mic 1/4 inch inputs, one phono or aux select input, 3-band graphic EQ, mono output

$ 110  Contact Us  

Realistic MPA-40

Audio Proz Inv #: 50081

35watt PA amplifier with two mic inputs and aux/phono inputs. Transformer output stage and nice EQ section good for voice or guitar. Excellent condition.

$ 80  Contact Us  

Realistic MPA-45

Audio Proz Inv #: 42651

small compact mixer amp, 3 band eq section, 2 mic phone Ins, basic 60 watts PA system with a very rugged design

$ 90  Contact Us  

Revox B-750 parts unit

Audio Proz Inv #: 50741

Integrated amplifier, 2 tape inputs, 2 headphones, Bass/presence/treble controls aux in/ tuner/ 2 phono inputs (phono/impedance loading with phono sensitivity switch). Unit has seen very minor water damage; 1 channel is out, face plate and knobs very good condition (missing loudness switch cap), case is rough-missing front fold down panel. Unit is good for boards knobs, one amp channel. *cleaned and lubed*

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We are presently operating on an APPOINTMENT ONLY basis. Please call us first at (617) 926-8020 to schedule an appointment before you come into the shop for repairs, rentals, product recommendations, consultations, or anything other than minor purchases.


Rocket fish kit RF WHT1B

Audio Proz Inv #: 59337

Simple add on to speaker wire and RF wireless jump to second receiver (AMP, with delay) time correction. OK product for small budged. Condition #9

$ 66  Contact Us  

Rocktron Rampage R10 Amp

Audio Proz Inv #: 57679

10 watts, 6" speaker. Unit has low use time. Features headphone jack and overdrive effect; overdrive has been modified to be less aggressive with lower noise. Condition: 9

$ 48  Contact Us  

Roland JC-120

Audio Proz Inv #: 28147

Jazz Chorus 120 combo amp. Excellent cosmetic condition. Completely cleaned and checked out. This version is at least mid period or later. Very low use (in home environment only). Great fidelity and clarity, any good effects will sound great through this. Very well done Roland equipment, in excellent #9 condition.

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Rolls PM52

Audio Proz Inv #: 53145

passive headphone tap, power amp loop, mono/stereo selection, 2 headphone out, condition

$ 32  Contact Us  

Rolls RA62

Audio Proz Inv #: 32700

headphone amp, 6 separate headphone outs, each channel has individual level control and insert, main in and stereo in, as new in box

$ 148  Contact Us  

Rotel 970BX Integrated Amp

Audio Proz Inv #: 52822

RA-970BX. Slimline, black. Basic Integrated amp. No phono in. CD, 2 AUX, 2 Tape, Tuner. Bass/ Treble controls. Cleaned and re-enforced. Connections, 60 Watts per channel. Comes with box and manual. #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.


Rotel RA-820 BX

Audio Proz Inv #: 40883

Integrated Amp, 40 watts channel, Slim line design, Tape/tuner/CD/Phones, high quality phono preamp, Note: headphones do not disconnect main speaker outputs when in use, Cosmetically slightly worn (lettering): 7 out of 10, Electrically excellent: 9 out of 10

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Rotel RB-980BX

Audio Proz Inv #: 41697

Stereo power amplifier. Soft limiting, bias set/calibrated, all board soldering touched up, switches all cleaned. 80 watts per channel at 8ohms, straight amp.

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Sansui AU-101

Audio Proz Inv #: 57278

Basic integrated amp; plays only 1 set of speakers. Inputs: Phono/Aux/Tape In/Mic In. Rugged design and slightly "tubaphone" sound character. Can operate on 220/240/117 volts. Modified lower distortion amp. Wood case edge is damaged, but unit has seen low use time. All control switches cleaned. AG cleaner. Condition: 8

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Sansui AU-G77X

Audio Proz Inv #: 55363

Integrated amplifier; disc, tuner, tape 1, tape 2, aux inputs, MM, MC, CD disc selector, 5 band equalizer, high/low filter, loudness, headphone out, A, B, A+B speaker select, REC selector. 9 condition.

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Sanyo JA 660-2

Audio Proz Inv #: 60544

Graphic EQ 5 band. Inputs: Phono/tuner/CD/TV/Tape monitor. 70 watts/channel. Actually an audiophile grade amp design. Tested, serviced, cleaned, working. Due to visible scratches on top cover condition #8.

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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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APT 1 Amplifier Upgrades and Repairs Technical Information: Read more about it here.


Scott 299c Amplifier

Audio Proz Inv #: 27708

H.H. Scott 299c Amplifier. Mostly fresh tubes, Lots of P.S. updates, decent cosmetics, (no dents, minor scratchin at edge of faceplate, all lettering intact)

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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  

Scott A 510 T 520

Audio Proz Inv #: 61924

Compact slim line design. 60 watts peak power. Digital tuner, 8 presets. Easy to use, basic and has slightly warmer sound. Good #8 condition

$ 166  Contact Us  

Scott A4001

Audio Proz Inv #: 59618

w/remote. 100 Watt. Audiophile grade. Amplifier design. Many inputs, but unit has ground jackets torn off Of RCA for AUX and video in. Low use/bargain unit Condition #7

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Scott LK-72 Stereomaster

Audio Proz Inv #: 43319

Power amplifier. This unit has a bad tube and a bad fuse holder, otherwise a good machine for parts or hobbyist use. Contact us for more information.

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Scott Stereomaster 260-B

Audio Proz Inv #: 61117

Integrated amp, champagne finish, 3 inputs (2 aux, 1 tuner), 1 mic, phono, 2 speaker switching, silver face, tone control in/bypass, all original caps test OK / the Scott sound untouched, very low use - in storage for many years, minor update on capacitors - power switch installed, all switches cleaned #8+

$ 288  Contact Us  


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.


Scott Stereomaster LK-60

Audio Proz Inv #: 50414

Solid state stereo amplifiers Scott kit, Tape, Phono, Tuner, Aux, Input Selections, bass, treble, balance, controls, wood case #8+ unit all knobs nice, all phono, input caps and transistor upgraded, unit probably could be upgraded with new EQ board capacitor

$ 380  Contact Us  

Sharp SM-15

Audio Proz Inv #: 60368

Stereo Amplifier. 2 outs, Tape/Aux/Phono/Tuner in 2 band EQ, balance silver face, slim design. Headphone jack, nice simple rugged design, 25 watts. Resoldered back panel connections, #8+ condition.

$ 116  Contact Us