Audio Proz Service and Sales


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.

Not For Sale  Contact Us  

Contact us about similar items or replacement parts.

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  

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  

ART Multiverb master program chip

Audio Proz Inv #: 47771

Early version program chip, known to be working. v1.12

$ 22  Contact Us  

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  


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 Micro Amp

Audio Proz Inv #: 8410

Cleaned all controls and jacks

$ 25  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  

Rotel RDA-980

Audio Proz Inv #: 52687

Digital surround adapter. Condition unknown. 3 digital in, 5.1 DB-25 out, RCA front, rear, center, sub out, time alignment controls. Sold for nice chassis. Has broken switch for center channel. May need some board work. Untested.

$ 30  Contact Us  

ART 16x2 display

Audio Proz Inv #: 47602

used in most ART products of the '80's and '90's, including SGX, DRX, LT, and Multiverb. New old stock.

$ 32  Contact Us  

EPROM V1.22 update

Audio Proz Inv #: 47588

Update from TSR 24 Version 1.22 to 72-3076-01 v1.22. new old stock

$ 34  Contact Us  

DBX rack ears

Audio Proz Inv #: 55210

(4) Available. For model 266A and others, brushed black finish, 1 1/8 inset height, has original mounting screws. (inset "tongue" design version.) $22ea. or $44 per pair Condition: 8+ very minor screw and rack rash MAY NOT FIT DBX 166 unless holes are slightly drilled out

$ 44  Contact Us  


Re: International Shipping: We ship internationally often and have yet to encounter a problem or complaint. We are very careful to test the equipment before it’s packed and then to double box the machine with added protection when needed for front panels, etc. We are not amateurs or an ebay store; we know these machines very well and know what it takes to get them to you safely. We use USPS priority internationally which seems to be the cheapest. If you prefer another carrier (you should know who delivers to your area reliably) please let us know. Also please be aware of any tariffs that you may be responsible for upon pick up on your end. International shipping may be expensive but we will make sure it is not a headache on top of the cost. PLEASE NOTE THAT SHIPPING INTERNATIONALLY WILL BE A MINIMUM OF $16 EVEN FOR SMALL PARTS.


DBX module

Audio Proz Inv #: 40442

Silver body module. Photos available.

$ 48  Contact Us  

Pioneer DT-530

Audio Proz Inv #: 26464

Audio Digital Timer, 2 AC outlets, Clock adjust, sleep set timer, thin line

$ 60  Contact Us  

Aphex Aural Exciter Type C

Audio Proz Inv #: 53179

Original. #9 condition, ruggedized inputs and outputs solder points.

$ 66  Contact Us  

EXR

Audio Proz Inv #: 59309

Exciter 2 channels. Read description careful. Is in excellent condition but only one channel working. Needs internal module replaced. Worth Chassis and one working module Condition #7

$ 66  Contact Us  

Crate GFX1000

Audio Proz Inv #: 59754

With power supply, 99 programs of incredible stereo, echos, chorus ect. multieffect. Few Guitar overdrive mostly beautiful reverbs all in stereo can be foot switched. Compact unit. Low use. #9 condition.

$ 66  Contact Us  

Aphex Aural Exciter Type C

Audio Proz Inv #: 50891

Stereo processor. Adjustable drive, tune, and mix. RCA and phone in/out. Excellent condition with very minor rack wear.

$ 68  Contact Us  


FYI, Around the database you will often see us describe the condition of units on a scale of 1-10. #10 would mean the product is new from one of our suppliers, such as Behringer, Audio Technica, etc. #9 means the product is in perfect condition but is used, #8 implies there are some minor cosmetic scratches but unit is mechanically perfect, and so on and so forth.


Rocktron RX1

Audio Proz Inv #: 7266

Exciter/imager.

$ 80  Contact Us  

Korg DT-1 Pro guitar tuner

Audio Proz Inv #: 50935

Rackmount digital guitar tuner. Four inputs, four outputs, all 1/4" phone. LED scale -50dB to +50dB. Very good condition, includes rack ears, power cord spliced to 3' length.

$ 80  Contact Us  

Alto Verb II

Audio Proz Inv #: 41501

NEW. 40 bit digital Efx. 256 Stereo Effects. 16 Programs. Bariable 1/o gain. Stereo/mono 1/4 inputs. Demo oempty.

$ 88  Contact Us  

Kenwood SS-79 AV Surround Amp

Audio Proz Inv #: 56567

Combination surround sound processor and 15 watt amplifier with Dolby stereo. Designed to add on to any stereo and create surround sound for spatial settings. Black slim-line all metal construction. Condition: 9

$ 88  Contact Us  

DBX 263A

Audio Proz Inv #: 55208

De-Esser half rack unit. High frequency/ broadband selector, "more" fader with LED indicator, frequency control. HI-2 1/4 inch in on face, In/out 1/4 jacks on rear. Can be used as either full band reduction or high frequency notch control, also can thicken low level compression. Virtually unused, light scuffs on top. No rack ears. 9 condition.

$ 88  Contact Us  

Aphex Aural Exciter Type B

Audio Proz Inv #: 45088

Two channels, with Drive, Tone, Mix controls. 1/4" in/out, 0 or -10dB selectable. Very good #8+ condition.

$ 88  Contact Us  


Check us out on facebook.

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.


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  

Digitech Control One

Audio Proz Inv #: 51259

Floor foot switcher for 2112 preamp. Excellent #9 condition, includes MIDI cable.

$ 88  Contact Us