Audio Proz Service and Sales


ART Multiverb Two

Audio Proz Inv #: 15686

Updated to Multiverb Two, shop owners personal unit, 20 bit multiple effects processor, -24-0dB, MIDI utility, low noise, nice reverbs, modified-call us for details

Contact Us  Contact Us  

ART Proverb 100

Audio Proz Inv #: 23140

Blank face, nice rich room sound

Contact Us  Contact Us  

Audio Pulse

Audio Proz Inv #: 43355

We have some units available, $100-$200. In need of repair, parts and service are of course available here as well. Non functioning bottom board has shorted tantalum capacitors. #9 condition.

Contact Us  Contact Us  

Behringer Virtualizer Pro DSP-1000P

Audio Proz Inv #: 29342

REVERB 24 bit multi-effects, All ins/outs are XLR and 1/4" and have +4 or -10 switches SALE

$ 160  Contact Us  

Biamp MR140

Audio Proz Inv #: 46261

Spring reverb with 4-band equalizer. Special modification to improve signal to noise and dynamic clarity of spring resonance and chassis dampening. Very good condition. This mod is also available for your spring reverb look here for more info: 

$ 260  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 DE-200

Audio Proz Inv #: 54634

Digital Delay. 1RU unit. Input level adjust, range & fine delay time, rate, and depth modulation controls. Feedback level, direct and delay output mixer controls. 1/4" I/O on face, 1/4" I/O for direct mix, invert mix. Fully serviced and working. Rhythm sync jack not replaced, road worm machine, #6 condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Delta Lab ADM 1024 Effectron

Audio Proz Inv #: 57072

Digital delay rack unit. Has various modifications for cool effects: 1. Super resonance effect almost like ring modulation; 2. Super delay repeat, to create metallic ringing; 3. Extra, slightly longer delay and granular digitization, or can be made super clean. Condition: 8+

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Delta Lab ADM1020 Effectron I

Audio Proz Inv #: 43557

Unit has long echo, short echo, double, and flange settings. Level, Feedback, Modulation, Width, Speed, Output Mix controls, 2/4 input, output repeat and bypass. Excellent #9 condition, completely cleaned and recalibrated.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

DeltaLab ADM 456

Audio Proz Inv #: 46257

Three delay lines in one rack unit, in series, parallel, or stacked for an acoustic time correction. 5,10,20,40,80 millisecond increments, up to 160ms total possible delay. Great for sound reinforcement in a church, hall, etc. Like new, mint condition.

$ 180  Contact Us  

Deltalab ADM-512

Audio Proz Inv #: 17893

Memory MoDual, 1 rack mount space, 4 memory bank LEDs, 2 channel, blue face, LED display, delay-bypass switch, select up/down each channel, 5 pin XLR in/out, 1/4" bypass jack on back panel. (call directly 617-926-8020 for similar or alturnative devices). 

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Deltalab DL-1

Audio Proz Inv #: 14159

Digital delay module, Excellent condition, never rack mounted. 1 rack mount space, 2 delay channels: both 0-100 and 0-160 (short/long). 1/4" phone jacks in front I/O, LEDs to show delay setting, 3 outputs on rear with barrier screw terminal strip on rear. Very nice.

$ 88  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.


Deltalab DL-3

Audio Proz Inv #: 15310

Mint condition, like new! Digital delay line, 64ms P.A. delay line.

Contact Us  Contact Us  

Deltalab DL-4 Timeline

Audio Proz Inv #: 28254

SN#1533 512 millisecond delay @ full bandwidth. Flanging/doubling/chorusing echo. Digital octave flanging. Infinite repeat, resonant and doppler effects. Excellent condition unit, owners original unit, some noise modification. Does automatic step through delay. This unit features some very novel modulation of digital delay with a VCO which can operate as a square, sine, or triangle wave. As well, it does granular time based shifting of the delay line (ie. constantly shifting digital taps off the delay line). Very cool. This machine belonged to the owner and has never been roaded or misused.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Deltalab Echotron ADM 4096

Audio Proz Inv #: 25411

Digital loop delay, delay factor and mix controls, input level and feedback controls, metrinome, infinity repeat

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Deltalab Research DL-1

Audio Proz Inv #: 14021

1 rack mount space, I/Os are (3-wire) electronically balanced, dual long and short delay A/B, out mode A (Bal.) or A+B, long 0-160 in 8 increments, short 0-100 in 5 increments, I/O level pot

Contact Us  Contact Us  

Digitech DSP 128

Audio Proz Inv #: 22639

Stereo in/out, MIDI in/out/through, delay and reverb processor. Does great spacial effects, long delays, repeats, reverbs, flanges. Can also be used with mic input for vocal effects. Excellent condition item from Vinces studio.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Digitech DSP-128

Audio Proz Inv #: 21479

Multi-effect digital reverb, stereo 1/4" ins, stereo dry output and stereo mix output, -20-+4 instrument/line switch for input and output, MIDI in/out/thru, can take mic in, modified-call us for details

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


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  

Digitech RDS 1900

Audio Proz Inv #: 43433

Modified and improved by AudioPro! Bypass/Repeat Hold, 2-second delay, VCO in, guitar/line level in. With variable gain limiter circuit. Modified for super echo fidelity- 6 to 10 repeats before soft break up. Grainy, lofi echoes are also possible. Modified low noise op amp and power supply. Dry out is effects loop into feedback when "Invert" is switch on! #7+ condition.

$ 280  Contact Us  

Digitech RDS 3.6

Audio Proz Inv #: 48388

3.6 second delay with all analog controls for effects. AP modified for optimum delay fidelity, feedback circuit changed to allow infinite and overloaded feedback, delay time range widened for greater control, unit switches between long and short delay settings. Back panel has complete set of control in/out jacks. Unit does 220/110vAC. Excellent #9+ condition.

$ 240  Contact Us  

Digitech RDS 7.6 Time Machine

Audio Proz Inv #: 47119

Delay / Sampler single rackspace unit. Up to seven seconds of delay with modulation effects. Optional foot pedal control of delay and modulation. Excellent #9+ condition, no scratches, with original box and manual.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Digitech RDS2001

Audio Proz Inv #: 23839

Digital delay

Contact Us  Contact Us  

Digitech RDS3.6

Audio Proz Inv #: 24871

3.6 second delay with variable controls, foot switchable, modified power supply for lower noise. **New Low Price!**

$ 220  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.


Digitech RDS7.6

Audio Proz Inv #: 23899

Digital delay- calibrated by AP

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Digitech STUDIO QUAD v2

Audio Proz Inv #: 62161

Super quality, 4 channels of configurable effects, pitch, shifting reverb with endless combinations and nice easy view display with lots of programing. Minor back scratches. #9

SOLD  Contact Us  

Contact us about similar items or replacement parts.