Audio Proz Service and Sales


Korg KEC-42

Audio Proz Inv #: 14216

EQ/Compander, 4 channel EQ, midrange sweeping and side chain expander/compressor etc., stereo compressor

$ 130  Contact Us  

Korg KEC-42

Audio Proz Inv #: 17896

EQ/Compander, 4 channel EQ, midrange sweeping and side chain expander/compressor etc., stereo compressor

$ 130  Contact Us  

Korg KEC-42

Audio Proz Inv #: 45346

Very compact and clever EQ/Compander/Compressor. 4 EQ channels, 2 channels have built in gate/compressor. Four channels come in and can be equalized with sweepable bass and treble. Two other channels can come in to be compressed or gated by signal control of any of the four input channels. Like new condition.

$ 130  Contact Us  

Yamaha GEP50

Audio Proz Inv #: 41803

50 effects programs including reverb, distortion, flanger, chorus, EQ, phasing, etc. , 50 programmable memory banks for saving effects settings, MIDI in/thru, 1/4" ins/outs

$ 135  Contact Us  

Stanton DFX-1 Effects Controller

Audio Proz Inv #: 43749

FX controller with 85 presets. Single and combo echo, auto pan, flanger, reverb, pitch shift, etc. Effects sync and BPM analyzer. Includes 9v AC adapter. New.

$ 140  Contact Us  


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.


MXR-131 foot controller

Audio Proz Inv #: 47622

5-switch ADA metal chassis modified to control an MXR M-131 Pitch Transposer. Four pitch shift preset buttons and one bypass button. Uses standard shielded 1/4" cable. Excellent condition, previously used only in Vince's personal studio.

$ 140  Contact Us  

Behringer Feedback Destroyer Pro DSP1124P

Audio Proz Inv #: 33841

Model DSP1124P. Sn: L0213602124. QC - OK. New stock.

$ 148  Contact Us  

GLI Pro EF-256

Audio Proz Inv #: 42328

Effects processor, 1 rack space with mic preamp in stereo, mixer for Mic/Line XlR/Phone inputs, stereo multi effects unit

$ 148  Contact Us  

Symetrix 528

Audio Proz Inv #: 63999

Mic, Pre, EQ. Compressor DE SSS. Uses SSM Mic Pre IC. 3 band sweep EQ. 48V Phantom power. Low use. Cleaned, calibrated #9- condition 

$ 148  Contact Us  

Digitech GSP5

Audio Proz Inv #: 13940

Multi-effects processor, 5 effects, very quiet/clean, great solid state and distortion sound, echo and chorus delays

$ 150  Contact Us  

Tascam EX-20 / Tascam PE-20

Audio Proz Inv #: 17725

Tascam EX-20 Expander, 4 channel, XLR/Phono I/Os, Bus I/O (phono), phono dir out, Trim/Aux/Aux pan/Pan each with own volume / Tascam PE-20, Parametric EQ, all phono I/Os, High/Mid/Low pots with levels, 4 channel - - **$150 for the pair**

$ 150  Contact Us  


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.


Apex compellor model 301

Audio Proz Inv #: 27744

Excellent front panel cosmetics!! manual included. Meter selection- input/output, gain reduction/program, input gain, process balance,output gain, silence gate threshold, bypass. XLR in/out, 1/4" leveling tie input. Mono only unit!!! full rack space.

$ 150  Contact Us  

Yamaha DSP-E300

Audio Proz Inv #: 45866

Surround sound reverb unit with Dolby Pro logic processor. 20watt amplifier for l/r front, center, and rear channels. Audio level i/o for each of front, center, and rear. Professionally cleaned and serviced with some minor upgrades to soldering and amp board. Excellent condition face, very good #8 overall with some scratches on top cover. No remote included.

$ 150  Contact Us  

RG Dynamics SS-1

Audio Proz Inv #: 52043

Signature Series 1 dynamic range expander. 2U Rack Mount Unit Used in very good condition, some rack wear on corners. #8 condition . Good looking faceplate, minor rash on one corner. Totally cleaned and serviced, with AP modifications for cleaner dynamics!

$ 150  Contact Us  

Yamaha DSP-E1000

Audio Proz Inv #: 61923

Sound Field Processor amplifier, with remote. 55 watts/all channels. Complete cleaning, service + ruggedizing of circuits. 8+ condition

$ 150  Contact Us  

Behringer Dualfex II EX822

Audio Proz Inv #: 24993

Enhancement processor, 1 rack space, for home audio/pro mixes, improves fidelity and corrects, bass and treble frequency phase enhancements. New in box w/warranty

$ 160  Contact Us  

Furman QN-4A

Audio Proz Inv #: 10570

Quad noise gate, 3 month demo - no box packing manual

$ 160  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.

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.


NEC AVD700E

Audio Proz Inv #: 8362

Surround processor, multifunction video processor

Be aware, this is not an amplifier but a rather remarkable, super audio quality 4 channel processor. It has 2 channels in and 4 channels out which allow the unit to create delays and acoustic ambiance enhancements from the original 2 channels. This machines best attribute is to extract the natural ambiance (reverberation) from the stereo image and place it in the back channel as well as adding user-adjustable delay time to further enhance the natural surround/large room effect. Its a device for the purist audiophiles who are not looking to substantially alter their sound but rather enhance their stereo to 4 properly placed speakers. Feel free to call for more info if you are interested.

$ 160  Contact Us  

BBE 402 Sonic Maximizer

Audio Proz Inv #: 47875

Audio enhancement processor for improvement of low and high frequency dynamics and detail. Pro and consumer version with phone and RCA ins/outs. Nice, subtle audiophile effect considered better than the newer version (Vince agrees!). Very good #8+ condition with some minor scratches on top and rack ears. Completely cleaned, serviced, calibrated, tested. 1 rack size.

$ 168  Contact Us  

Korg KEC-42

Audio Proz Inv #: 17897

EQ/Compander, 4 channel EQ, midrange sweeping and side chain expander/compressor etc., stereo compressor, missing foot - Housing rack unit style but no "ears" 1 space. With original box, packaging, manual, and warranty card.

$ 170  Contact Us  

DBX 263A

Audio Proz Inv #: 40159

new in the box.

$ 170  Contact Us  

Behringer Bass V-Amp Pro

Audio Proz Inv #: 43996

Rackmount bass preamp processor.

$ 170  Contact Us  

Behringer Bass V-Amp Pro

Audio Proz Inv #: 44212

2 space rack design. 32 amp models, 23 cabinet models, 16 effects (analog and digital). 1/4" headphone out.

$ 170  Contact Us  


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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. 

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.


ADC VSS-2

Audio Proz Inv #: 11581

Video processor/router, has I/O for 3 VCRs, does Audio/Video fades, full functional check OK, cleaned and QC.

$ 175  Contact Us  

Aphex 103A Aural Exciter Type C

Audio Proz Inv #: 14989

Different version than most Type C, Has much better drive circuit and 5534 opamp circuits! Nicer sounding and more sophisticated entrance circuitry quieter operation, wider range on frequency tuner.

$ 180  Contact Us