Audio Proz Service and Sales


A/D/S 1290 Tower Speaker

Audio Proz Inv #: 60052

Pair. Teak wood cabinets. All original drivers. Sweep tested OK. Black metal mesh grills. 1 midrange dome has minor stain but functions perfect. ***Audio Pro modified crossover*** Rev 4. Improved fidelity. 2nd order high frequency filter. Better power handling. More natural voice/midrange. Treated rubber surrounds. Nice cabinet. The metal grills are not great, but this is the BEST hi-fi speaker!! Condition 8+.

SOLD  Contact Us  

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Acoustic Research Model 8.3 Phantom

Audio Proz Inv #: 60535

(Pair) Slim line aluminum cabinets. Mirror image placement of speaker drivers. Replaced with softer dome midrange nicer audio quality for audiophile range. Added cabinet dampening. #9 condition

$ 440  Contact Us  

ADC Sound Shaper Ten

Audio Proz Inv #: 56569

20 band stereo cap and coil equalizer. Black face with handles. Left/Right meter control, Line/Rec, Bypass/EQ controls, Tape 1/2 monitor. Faders have red LEDs, RCA in/out. This is an excellent unit with low hours use, and has been fully tested and serviced. Condition: 9

$ 228  Contact Us  

Akai GX-4000D

Audio Proz Inv #: 59483

7 Inch Reel, 1/4 track stereo. Excellent. Mint condition. Calibrated to rec/play. Maxwell UD and Ampex 456. Output control at #6 is 0db reference. Low use. Condition: #9

$ 388  Contact Us  

APT Holman Preamplifier

Audio Proz Inv #: 61506

SN# A10088 Level III mod.  Super calibration low phono noise. Late version. #9 

$ 588  Contact Us  


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ART DRX digital multi fx

Audio Proz Inv #: 28091

single space rack unit, excelent shape. stereo in/out. 2 second sampler and multi effect. Excellent shape.

$ 200  Contact Us  

Art Pro VLA II

Audio Proz Inv #: 59467

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

$ 498  Contact Us  

Art Pro Channel

Audio Proz Inv #: 46218

New stock, Super low noise, QC by AudioPro. Microphone preamp, compressor, and EQ. Is a super spec machine! Incredible quality and condition.

$ 330  Contact Us  

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.

$ 480  Contact Us  

Art Pro Channel

Audio Proz Inv #: 54689

Modified vactrol variable transformer, and tube bias mod. Professional tube microphone pre-amplifier. Tube/optical compressor. +48V phantom power supply. With true "tube gain cell" compressor. B stock.

$ 480  Contact Us  

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.

$ 900  Contact Us  


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.


ART PRO MPA II

Audio Proz Inv #: 57640

Two channel Mic/HiZ. M/S Matrix. Variable input Impedance. Variable plate voltage. QC- Lubed, Burn-in, switches exercised. #10 Condition (New).

$ 328  Contact Us  

ART PRO MPA II

Audio Proz Inv #: 57639

Variable impedance. Two channel MIC/HIZ. M/S Matrix. Variable plate voltage switch. QC Lubed, exercised, burn-in. #10 Condition (New)

$ 328  Contact Us  

ART SLA 1

Audio Proz Inv #: 60152

100 watt, rack mount. Unit has quieter version fan by design. Bias, hum, noise is exceptionally low. Audiophile version spec. QC Kim. Condition 10.

$ 288  Contact Us  

Audio Technica AT-LP120 USB

Audio Proz Inv #: 60412

With original basic DJ autotechnica cartridge serial #C16272065720. Six ground modifications: arm/collar, platter/static drain, digital, transformer, and security earth ground wire. Lowers noise floor. Modified arm bearing set up, #10 condition (new).

$ 448  Contact Us  

Audio Technica AT4071A

Audio Proz Inv #: 38006

Line/Gradient shotgun condenser capicator microphone. Particularly useful for miking dynamic action in film/TV audio as well as in “spot” miking techniques in the music studio or theater. Like new condition, minor wear on display box.

$ 680  Contact Us  

Audio Technica ATW-1031

Audio Proz Inv #: 30167

Rackmount Wireless Diversity System. Belt pack frequency 13C (211 MHz). With 1/4" connection for guitar. Also includes AT-830cx Lavalier mic. Like new, #9 condition. ** Special Sale! **

$ 360  Contact Us  


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Audio-Technica AT-LP120-USB

Audio Proz Inv #: 60859

Direct drive professional turntable. 33/45, forward/reverse direction switch, pitch control, quartz, speed. W/Ortofon 2m cart/stylus. LIKE NEW, VERY LOW USE. W/Operation manuals+USB recording software disc. Grounded platter to lower static noise. Excellent condition, very nice, clean cosmetics, nice dustcover, purple/blue tint.

$ 288  Contact Us  

Behringer Truth B2031P (pair)

Audio Proz Inv #: 56025

For sale Audio Pro Rev. 4/5 Modified passive version. New. 2 way passive monitor speaker (pair). Audio Pro modified. Rev 4 Design. Custom cabinet damping. Model 2031A are amplified speakers. I suggested 2031 passive design, and to use any good 40-100 Watt amplifier. Check out the Behringer website for a picture. A modified set is $448. We modify the 2031 to be a near field monitor where midrange tone is "warmer" or slightly receded image by a 3db through about at octave between 800 - 2000 H3. A far field monitor version is slightly brighter or stronger midrange and designed to listen at 4 to 8 feet distance. Basically flat response is perceived at that range. Near field version is for 2 to 5 feet away listening, and indeed most BSEE acousticians agree that a near field should be dipped in midrange. In both cases, the modification consists of improved multi section crossover (it presently has a very simple 4-part crossover) as well. We install a dampening blanket between the internal chambers, dampen tune one of the port slots and finally apply soft felt clone dampeners to improve midrange level and tonal match to crossover. The cabinet is now tuned to reproduce 40 Hz powerful and clean. The speakers are very heavy design with cast frame woofer, using high density MDF cabinet, very well done. No grill cloth is included by design. Shipping can be $38 or so to get them to you.

$ 488  Contact Us  

Beyer M 69 N (c)

Audio Proz Inv #: 59267

New in box. Product from 20 years ago, never used, tested OK

$ 240  Contact Us  

Boston Acoustics A120

Audio Proz Inv #: 60756

Pair. 3 way. High quality design. 10 inch radiator woofer. Faux oak cabinet. Professional refoam on all woofers. Black grills. Nice tonal balance. No mods except midrange damper felts. 24" high 10" deep. Condition #9.

$ 368  Contact Us  

Boston Acoustics A26

Audio Proz Inv #: 59666

2 way 6 1/2". Bookshelf loudspeaker. New in box. Condition #10. Call for best price.

$ 400  Contact Us  

Burwen TNE 7000

Audio Proz Inv #: 58351

Record click and pop suppressor. Rev 3 modification. Rack. 9/10 condition.

$ 398  Contact Us  


Customers outside of the US, please note that international shipping can be costly ($14-16 minimum for anything larger than an envelope). 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.

$ 310  Contact Us  

CAD Trion 6000

Audio Proz Inv #: 55862

Multi-pattern condenser mic. 1 inch gold sputtered Dual diaphragm capsule. Omni, Figure 8, Cardoid patterns. Hi-pass filter, 10db pad. Has professional shockmount and aluminum carry case. QC heat run, noise spec excellent. New in box. 10 condition.

$ 200  Contact Us