Audio Proz Service and Sales


Behringer T 1952

Audio Proz Inv #: 41816

Stereo Compressor/Expander/Gate 2 rack space Vacuum Tube Processor WOW excellent compressor!

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Behringer T1952

Audio Proz Inv #: 51952

Stereo tube compressor. Super spec noise and calibration unit with minor AP-modifications of critical tube selection and internal calibration to allow "warmth control" to create in phase or out of phase perfect second harmonics of .2 to 1%. (Warmth meter will now read lower than original.) Noise mod in power supply. Excellent condition.

$ 360  Contact Us  

Behringer T1952 Compressor

Audio Proz Inv #: 72531

One channel has damaged VCA, other channel appears to have bad balance line OP AMP (not certain), motu was plugged into both channels at various times, channel 1 fails when phantom powered mic used meter pins-no sound, need new back panel board, Condition #7

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Behringer T1952 Tube Composer

Audio Proz Inv #: 41815

Vacuum Tube Processor, 2 channels, Gate/Expander, Comp/Limiter and Warmth controls, Ultra-low noise, QC check ok: all switches match with 1db on both channels

$ 208  Contact Us  

Behringer T1952 tube compressor

Audio Proz Inv #: 47419

 Vinc -Audio Pro Modified for enhanced, adjustable tube dynamics with controls on front panel. Stereo tube compressor  XLR or phone in/out, -10/+4dBm switchable,  Extremely accurate calibration; channel to channel is only +/- 1dB over 60dB range of operation.  Also installed highest quality Behringer OT-1 output transformer. This unit has tube harmonic equalizer circuit installed, does variable 2nd harmonic adjustments. (is our shop engineering sample for variable true tube harmonic equalizer effect). #9 Excellent condition, no box, unit warrantied.

$ 580  Contact Us  


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 $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.


Behringer Tube Composer T1952

Audio Proz Inv #: 42708

Unit has super spec controls. Two channels of expander/gate and compressor/limiter. Two 12AX7 tubes to add harmonic character. Both channels track within 0.5 db of each other! Up to 60db range of compression. Modified for more pleasing 2nd order harmonic enhanced sound. Demo unit, with box, packing and manual. Please call for details.

$ 340  Contact Us  

Behringer Ultradyne Pro

Audio Proz Inv #: 34858

Digital 24-bit dual DSP

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Bellari DPB48 meter

Audio Proz Inv #: 51928

for various models. Black face meter. Used in good condition.

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Bellari RP-282

Audio Proz Inv #: 40044

Tube Stereo Compressor, rev. 4. Designed to accomodate +14 to +24db operation. Matched Vactrol. Basic update for improved tube gain/noise. Improved Vactrol circuit and matched channels. Improved threshold, range compressor. Change of design to cathode feedback dynamic bias / tube harmonic. Engineering Sample (#9 condition). Volume levelling compressor (brings volume up, matched tubes).

$ 680  Contact Us  

Bellari RP-533

Audio Proz Inv #: 23734

Heavily modified by Vince. 7 new switches, overdrive control, combo mic pre/comp/eq with many added features. Low noise high gain tube modification. 2 Band Bass/Treble. Front panel paid gain/phase switch. Tape saturation control. Smooth fast compression switch. High gain / bright switch. Power supply ground mod. Transformer EQ optical mod. This is the cats meow! Call for details 617-926-8020. Top flight cosmetic condition #8 with just a tiny bit of rack rash. 

Some additional information customers have asked about:   This unit is 90% all tube, the op amps are for RMS, DC control, balanced out not audio! What I do is make the circuits have more head room less noise better tube character and more correct RMS detector tracking. As you may have noticed the output circuit clips badly and is nowhere close to semi-pro level. It's a wrongly done balanced line op amp stage. Also the compressor threshold and ratio controls are too sensitive, as such the unit can go into a strange and not very likable distortion if pushed. There is some good basic design circuits in this, but just not enough. My mods are not about installing fancy parts it's about improved circuit performance

$ 680  Contact Us  

Bellari RP-583

Audio Proz Inv #: 23887

Engineering model, modified-rev 6, unit has updated board installed-RP282 to RP583, dynamic eq bias/channel tracking within +/-2dB, assymetrical RMS/detector circuit installed, logarithmic slope detection, PS modifications/head room and noise mod. Calibrated +/- 1db channel to channel. Too much to list, call for details.

$ 880  Contact Us  


We offer expert time-saving advice on repairing many types of home and studio equipment, as well as consulting for product and recording issues, at a fair and reasonable cost.  For complex matters, we sometimes must charge a small technical fee.  If we can help solve your repair problem or technical conundrum, give us a call.  (617)926-8020.


Boss Cl-50 Pro

Audio Proz Inv #: 61963

1/2 rack space unit. Used - good #9 condition. Power supply : 12VAC 450ma

$ 140  Contact Us  

DBX 116 9 Black Bezel For Aluminum Shaft Pots

Audio Proz Inv #: 54510

DBX 116 9 Black Bezel For Aluminum Shaft Pots. 8+ used. $2 each.

$ 2  Contact Us  

DBX 117

Audio Proz Inv #: 28084

2 channel compressor Face is slightly stained. wood side panels ok. all serviced and calibrated.

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DBX 117

Audio Proz Inv #: 59427

Modified to do greater compression and expansion range. For studio use or consumer. Has old style metal shielded modules similar to old DBX 160 series RCA in out. but unit will operate sem pro +14db levels now.

$ 240  Contact Us  

DBX 118

Audio Proz Inv #: 24206

Dynamic range enhancer, can handle pro +14 dBm level, powerful linear compressor/expander, useful to compress listener program music to nice even level background, excellent audio quality circuitry similar to most expensive DBX equip., power supply cap upgrade, audio capacitor upgrade, calibrated, etc.

These machines are rare and special because they are true gain ranging compressors for engineers who want to squash a high dynamic range without much pumping. It is also able to expand dynamics, adding energy and depth to dead recordings.

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DBX 119

Audio Proz Inv #: 26833

RCA A+B in/outs, RCA outputs to preamp.

These machines are rare and special because they are true gain ranging compressors for engineers who want to squash a high dynamic range without much pumping. It is also able to expand dynamics, adding energy and depth to dead recordings.

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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.


DBX 119 Decilinear

Audio Proz Inv #: 59903

Compression/expansion control, threshold control, linear/nonlinear control. Modified for synth use. Does weird distortion/compression trick on both channels. 8+/10 condition.

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DBX 1252 IC chip

Audio Proz Inv #: 51682

IC Chip. Four pieces available.

$ 8  Contact Us  

DBX 146742 IC CHIP

Audio Proz Inv #: 59335

146742 C1253H2. Slightly used, pulled from a unit with low use, time tested, fully functional. Condition #9 MANY AVAILABLE. PRICE IS FOR ONE

$ 12  Contact Us  

DBX 150x / 160xt

Audio Proz Inv #: 54523

Top covers, call for availability and price. 9/10 condition.

$ 18  Contact Us  

DBX 155 IC 146221

Audio Proz Inv #: 47556

146221 IC part for DBX 155  New Old Stock

$ 18  Contact Us  

dbx 160 S

Audio Proz Inv #: 42391

Stereo mastering compressor. Super spec'd calibration for accurate control and metering, left to right channel matching within 1/2 db. Over 50db of compression range! Fully cleaned and checked over, re-soldered VCA V8 module at board. #9 condition, excellent.

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All Remotes are now 25% off or Free Shipping!!!  (Reel to Reel remotes excluded).


DBX 160XT

Audio Proz Inv #: 43560

Very nice compressor, designed for real pro work at +14dbm. XLR/phone in/outs. 120/240v. Hong Kong version with steel shield tops. 2 rack ears included. #8 condition with some obvious scratches on edge. Clean face and knobs in excellent condition. Professionally serviced and calibrated.

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DBX 160xt 166 dual control

Audio Proz Inv #: 47565

Part number 1378034 or 070082. 2.5". New stock part, two pieces available.

$ 24  Contact Us