Audio Proz Service and Sales


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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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

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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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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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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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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.


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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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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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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