Audio Proz Service and Sales


Art Pro VLA II

Audio Proz Inv #: 59467

REV2. NEW. 2 Channel vactrol compressor. With 2 channel modified with compression EQ. Condition: 10.

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Nakamichi DR-3

Audio Proz Inv #: 60128

Type I II IV tape selector, Bias tune control, digital counter repeat/play/record selector, Dolby NR MPX Filter. Headphone jack. Calibration perfect for maxell tapes type II. Excellent working and cosmetic condition, very clean internally and exterior, very minor scratches, Obvious multiple scratches on case cover.  Virtually no use time. #9- condition

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ART Pro Channel

Audio Proz Inv #: 43860

Tube microphone preamp. Audio Pro Modified for tube harmonic enhancement circuit, high quality USA Sylvania 12AX7A tube, also has IN/OUT phase, second harmonic enhance Control. Six stage tube design for preamp, compression, and equalization. New stock fully QC'ed. With true tube "Gain Cell" compressor. Super spec unit.

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ART Pro MPA

Audio Proz Inv #: 50897

Two channel microphone preamp with analog VU meters. 1/4" and XLR in/out, switchable gain, phase and Phantom, HPF adjustable 65Hz to 7Hz. With "Pultec" style cap and coil dynamic equalizer circuit. Excellent condition.  This unit has been heavily modified.  Read more about the modification here.

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Otari MX 5050 B2 HD

Audio Proz Inv #: 53600

2 track rec play, 4 track play head. Low use but much finger wear from editing face #7 condition. #8 mechanical heads 90% good. SN 18302122. #8 condition. Cleaned. Calibrated. Edit, speed switch replaced, some lettering worn away at function buttons. Calibrated for Ampex 456, Maxell.

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Local customers, please do not come to the shop without calling ahead first - (617) 926-8020 - for an appointment, so that we can more efficiently help you with your equipment or sound recording needs.

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.


CAD D82

Audio Proz Inv #: 58134

matched pair can be made avaliable for $160 each or $310 the pair. Ribbon microphone. Figure 8 pattern. Very highly recommended ribbon mic. New in box.

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Marantz CD 5001

Audio Proz Inv #: 60651

Basic but well done Sony redesign. A-B repeat. Plays text read out. Slim line black. Remote dim of face read out. Plays CDR and damaged discs. Cosmetically perfect. Calibrated and cleaned. Condition 8+.

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Yamaha YP-450

Audio Proz Inv #: 58181

Manual only with cue. Long arm Turntable. Wood Base. New Audio Technica 311EP cartridge installed. Dust cover is in 7/10 condition (has obvious scratches). Turntable in 9/10 condition overall. Improved grounding and dampened and decoupled arm to lessen microphonics.

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Otari 5050 B-2HD

Audio Proz Inv #: 57447

2 track 1/4 record play. Has switch on top of head with internal speed switch - does 15, 7 1/3, 3 3/4 (internal switch reset motor speed). Has old side Otari press fit hub adapters. Heads are 75% good. Unit has been cleaned and calibrated; we re-soldered the power supply board and motor board; calibrated to semi-pro level for use with all kinds of tapes. All mechanics are good. Better side boards. Face cosmetics are nice. Overall, there is obvious wear all over, but this is a good performing machine. #8- condition

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DBX 3BX Series I

Audio Proz Inv #: 58712

3 band dynamic range expander. 0-50% expansion. Gain exchange LED system. Transition level fader module. Easily understood recording functions. Beautiful stained wooden panels. 9/10 condition (all clean calibrated).

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Yamaha CR-640

Audio Proz Inv #: 57692

Stereo Receiver, silver face wood case, 2 speaker switcher, high/low filters, nice tone control, multi selector input, record out select, 40WATTS per channel. 7+/10 condition, minor stains on knobs, FM center meter is non-functional, complete service clean, power supply ground mods etc, updated STK drive and IC. Unit has seen virtually no use time!

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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 6300

Audio Proz Inv #: 61702

Direct Drive. Auto Shut off, Pitch control, Can be operated manual/auto functions. *Needs Felt Stacked on Each Foot before sale, customer request. Note: unit hypersensitive on shut off @ end of record. Headshell has Shure V15 III, no stylus-Technics, headshell can also be fitted. No dust cover. #9 condition 

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TEAC A-3440 Multitrack Series

Audio Proz Inv #: 59004

4 track simulsync 1/4 inch tape. Pitch control. Metal Reel, Pitch Control, Hub Adapters, All channels within 1db tracking. Complete clean calibrate (1 meter replaced) 8/10 Condition, heads are at 85%, no feet on back or bottom #8+ Condition

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Beyer M 69 N (c)

Audio Proz Inv #: 59267

New in box W/ Spec Papers. Product from 20 years ago. Comes with Beyer Mic Holder. SN #: 53464. Part of shop owners personal collection. tested OK #10 condition

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Pioneer PL-560

Audio Proz Inv #: 60319

Quartz PLL, Full-automatic. 2 Speed repeat, anti-skate, pitch control. (Silver base) Shure RXT5 cartridge #9 condition. Tone-arm rest broken, unbalanced output. Turntable Mechanics #9, Dust cover #7 (severe marring) setup when sale. Speed check, cut, repeat speed adjust. All work feet replaced (nice stockmount). #8+ condition.

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Pioneer RT-707

Audio Proz Inv #: 60972

Best quality. Auto reverse, forward play. Machine has #9 condition. Heads are 80% good with perfect wear path. Unit calibrated to N.A.B. standards. Record play levels match +/- 1db speed calibration. New counter belt , Recent new pinch roller. Light white speckles on top case.  #8+ condition.

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Revox B795

Audio Proz Inv #: 60789

Basic linear tracking tone arm, Andante cartridge in #9 condition, updated power supply with new caps, nice, some obvious finger wear, cracked stem on dust cover, #8

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FYI, Around the database you will often see us describe the condition of units on a scale of 1-10. #10 would mean the product is new from one of our suppliers, such as Behringer, Audio Technica, etc. #9 means the product is in perfect condition but is used, #8 implies there are some minor cosmetic scratches but unit is mechanically perfect, and so on and so forth.


NAD 1300

Audio Proz Inv #: 61197

Pre amplifier, superior design, gunmetal gray, rack mount with rack handles, excellent phono stage, MM + moving coil class A fet design, eq circuit with turnovers (3), (bass 50/120/250 treble 3K/6K/12K), external processor (EPL loop), cosmetics excellent, low use, all control switches cleaned, #9

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Thorens TD-115 Belt Drive Turntable

Audio Proz Inv #: 62178

2 speed 33/45, pitch control, auto pickup, THorens isotrack tonearm, 2 piece wand-TP70 w/ signet cart (good condition), dustcover shows use, scuffs, scratches, 8" crack down middle, missing left hinge that holds tension spring, belt is ok, new RCA connectors, table has seen low use, condition # 8

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KLH Model 20

Audio Proz Inv #: 62927

Vintage Compact Stereo in Walnut base and dust cover, Garrard Full Automatic Turntable Changer 33 & 45 rpm with Pickering Cartridge, FM Stereo, 2 Aux & Headphone. This unit is fully serviced, mechanics lubricated,  switches and controls cleaned, calibrated and FM alignment. Works great, sounds really good ! Condition #8 (dust cover #7)

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Pioneer PL-518

Audio Proz Inv #: 62192

Very nice Stunning example of vintage Pioneer TT. Direct Drive, Automatic return only, 33/45, Speed adjustment (pitch). Silver/gray base, clear dust cover. Has used pickering X-15 cartridge on it that is in OK condition. Better cartridge can be installed upon request. #9 condition 

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Pioneer SX-650

Audio Proz Inv #: 63288

Stereo receiver, Silver faceplate in nice condition, 35 watts per channel. Phono, Aux, Tape 1 and 2 inputs. The power switch has been built onto back panel, speaker select switch for no longer works for power! Modified power supply, upgraded relay, RFI suppression caps added to inputs, FM alignment. Condition is #8 due to non original power switch. Extremely low use machine

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Sony PS-T1

Audio Proz Inv #: 63835

Direct drive turntable, semi automatic (auto return). 33/45 with pitch control. With Audio Technica AT311E Cartridge on Audio Technica Headshell. T.T Chassis dampening. Ground, copper shielding mods. Dust cover in very good condition (Fine scratches/swirls from use) Hinge springs not tense to hold up dust cover. #9- condition (hard copy was MIA when sold)

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We have thousands of items in inventory. To see our full inventory select the category under the Products dropdown menu, or at the top and bottom of each listing.


Phillips 867

Audio Proz Inv #: 63944

with Stanton 500 Cart and pickering D5E. Belt drive unit, auto shut off at end of play (No tone arm pickup). Electronic control 33/45 with pitch adjustment. #8+ condition #8 Dust cover

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ADS L-710

Audio Proz Inv #: 62999

(Pair) 3-way, double woofer, dome midrange + Tweeter. Walnut Cabinets in excellent condition (21.75"x12.25"x10.5"), knit brown grills - few pulls upper right hand corner). AP modded version 4 to correct midrange balance and impedance (woofer inductor 1.0mH to improve bass). Excellent sounding full range Hi Fi speaker!  Woofers professionally refoamed. #9 condition.

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