Audio Proz Service and Sales


ADA 2FX Digital Multi-Effects Faceplate (only)

Audio Proz Inv #: 72785

Some damage & wear. Needs cleaning. Definite signs of use but not overly damaged or worn. Condition 8

$ 24  Contact Us  

APHEX 104 Aural exciter type C2 w/Big Bottom Faceplate (only)

Audio Proz Inv #: 72784

Excellent condition piece with only minor signs of use, no major damage or broken parts. Condition 9-

$ 20  Contact Us  

DBX 3BX

Audio Proz Inv #: 72149

Older larger size machine, big LEDs wood sides, unit has plug in board design VCA, is the thicker bolder sounding unit, various update mods Tl072 op amp, calibration cleaning, condition #9 

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ADA MP-1

Audio Proz Inv #: 72125

Guitar Processor. Unit has Rev 6/ Rev 5 Modifications. Engineering Sample. Better Overdrive/ Tube EQ etc. Back panel phone jack is for line level. Unit has high/ low output switch on top cover. Fair amount of rack rash and scratches. Fully functional unit with only some minor cosmetic flaws. #8- Condition


On my website is a clear explanation about ADA MP1 and mods. Without a doubt the 3 tube mod is a waste of time and money and actually will make the ADA MP1 run incorrectly. This unit operates on the principal that the FETs control the tube voltage and carefully inject distortions into the cathode of the tube and also, the programming on the front panel changes plate voltages to tubes! A remarkably clever design! Obviously, the people who offer this 3 tube mod and double transformer mod do not understand this circuit or its operations technology and they are misleading concerned players.

The modification that I do actually lessens the tube gain, lowers the noise floor, and adds equalization that is better for todays vintage sound. Players want more versatility in programming usual guitar overdrive effects. The original design is way too screechy metal in its overdriven character for too many programs. My alteration allows a wider range of programming to go from the metal to warm, driven to crank, to a bluesy overdrive whereby the overdrive and equalization controls are calibrated more in the middle range of its programming numbers; i.e. Number 5 on the overdrive is now a nicely driven sound rather than a badly overdriven sound but the ADA MP1 will be still be able to be heavily overdriven on an 8 or 9 setting. These modifications were acceptable to the ADA engineer at the time. In fact, he commented that the electro acoustic sound with my parts change was similar to his thinking too, in that it allows for more flexibility for front panel adjustment for even more guitar tube preamping effects.

I have done this mod for 25 years!! No complaints yet. Please call me directly for more info.

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DBX 224, 163, wood side boards

Audio Proz Inv #: 71758

(PAIR) fits various early version, DBX processors 6 1/2 inch long 1 3/4 high, walnut, with screws, #9 Condition

$ 16  Contact Us  


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.


Behringer DSP1124 Feedback Destroyer Pro

Audio Proz Inv #: 71701

All checked OK, Comes with box and Manual, #9 Condition

$ 96  Contact Us  

DBX 3BX III 3-Band Range Expander

Audio Proz Inv #: 71593

With impact restoration. (no rack ears). All serviced calibrated channels to + - 1/2db. Some capacitors updated. Unit has ruggedization of board soldering for connector etc. Low use. Minor water spots at one side almost invisible. Condition #8+

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B&K Reference 50 W/ Remote

Audio Proz Inv #: 70868

A/V control center, digital encoder volume control, blue LED segment display, with remote- looks worn, "page main fav" appears not to work could be for special custom program, visible scratches on source control knob, switches cleaned and tested, condition 8+. 

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Pioneer SR-303

Audio Proz Inv #: 70483

Analogue Bucket Brigade Reverb. (Hard slap echo style - very funky). Back panel switch is set to -6dB. Display face is ok. No original knobs. Cleaned and calibrated. #8- condition.

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Alesis 16 Bit Recorder (Black Face Version)

Audio Proz Inv #: 70374

With ADAT remote, sync cable, optical cable link. Very low use time. 100s of hours. Basic service has been done. New belts and drive idler. Condition is a #9.

$ 288  Contact Us  

DBX AFS2 Advanced Feedback Suppression Processor

Audio Proz Inv #: 70123

24 filters per channel, Stereo or dual independent channel processing, 24 LED per channel filter metering, XLR and TRS ins/outs, Live and fixed filter modes, In original box/packing, Condition 9+

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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.


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  

Yamaha DSP-1 Digital Soundfield Processor

Audio Proz Inv #: 63889

Outboard Pre-processor, 16 sound effect programs including Dolby surround. Tested, controls & switches cleaned. Good condition, 2 small scratch on top face panel. Amazing quality reverb ! (needs remote control to access all functioins- may be made available)

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Sony PCM501ES

Audio Proz Inv #: 63540

Digital audio processor (black face panel) 1/4" headphone jack w/ level control. Switchable rec resolution 14/16-bit. OVC adjustment. Tracking adjustment. Auto PB mute. Copy function. Upgrade relays. Upgrade power supply. Use of highspeed bypass caps on most power supply and gain set caps in audio circuit. Highspeed/HF caps on conversion board. (Unit has some obvious wear scratches at top edge but actually low-use.) #8 condition.

$ 248  Contact Us  

BBE AUDIO RESTORATION SYSTEM

Audio Proz Inv #: 63519

Dynamic range, low/high frequency enhancement. Low Frequency  contour and control. Definition control, tape and source in/out, NO RACK INCLUDED. * FULLY SERVICED, EXCELLENT on RECORDS! Minor scuffs and scratches on top corner and top of faceplate. #8

$ 88  Contact Us  

DBX DX-8

Audio Proz Inv #: 63330

Noise reduction module, 8 channel in/out, individual channel encode/decode. SN #21058. *Needs relay cleaning upon sale. Unit mint in original box, box is damaged/torn but repairable. #9 condition

$ 360  Contact Us  

Digidesign 002

Audio Proz Inv #: 62940

Unit for parts, Working + -12+5 volts power supply assembly. Other parts, Not certain of other functions. Power supply may fit many other products, standard molex  connectors with 2 sets of voltage distribution. #7

$ call for information  Contact Us  


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 150

Audio Proz Inv #: 62621

Type 1 noise reduction system. (4) CA 3038 IC ($8 each) faceplate #8+ ICs, switches, buttons, etc, 7- condition CALL

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BBE Audio restoration system

Audio Proz Inv #: 62323

A well done dynamic equalizer for low frequency and high frequency enhancement. Socketed IC. Test good/ Calibrated

. #9 condition

$ 108  Contact Us  

Pioneer RG1

Audio Proz Inv #: 62278

Basic dynamic range enhancer and audio noise reduction . Nice Metering provides up to 14 db of total range enhancement. Excellent for phono enhancement. Has original packaging. #9 condition

$ 128  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  

Drawmer 3 pole rotary switch

Audio Proz Inv #: 61870

 Multiposition switch for Drawmer HHB and other English designs. #10 condition, new. 

$ 26  Contact Us  

Kenwood SC-75

Audio Proz Inv #: 60637

AV surround processor with 15 watt amp, standard theatre and surround modes, slim line black design, stereo calibration eq, delay control, simple but effective add-on for 4 channels includes instruction manual #8

$ 88  Contact Us  


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.


Sony Surround Processor SDP-E800

Audio Proz Inv #: 59855

Dolby digital and reverb programs. Makes very nice full air surround effects. Simple use, no remote. 1 volume control for all levels after digital setup. Digital Coax, AC-3, optical input. Optical in/out. 8+/10 condition.

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Furman Signal Processing Stereo System Monitor Model VU-40

Audio Proz Inv #: 59764

1/4" and RCA INPUTS/OUTPUTS, Rack Unit, Functional condition is excellent, Cosmetically some writing on faceplate has faded, but mostly still legible. #8 condition. (unit may be sold M.I.A)

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