Audio Proz Service and Sales


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

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Deltalab Echotron ADM 4096

Audio Proz Inv #: 25411

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

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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.

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Deltalab DL-3

Audio Proz Inv #: 15310

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

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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  


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.


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). 

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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  

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.

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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+

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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.

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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 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 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  

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.

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ART Proverb 100

Audio Proz Inv #: 23140

Blank face, nice rich room sound

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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

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ART DR2

Audio Proz Inv #: 14991

mono in/stereo out reverb, super quality $800 unit in the mid 80s, awesome reverb, basic room program alteration, live time adjustable, 2 preset, very unique big roomy sounds, rich warm sound

$ 150  Contact Us  

ART DR-2 Digital Reverb

Audio Proz Inv #: 51021

Mono or stereo out, very airy, slightly "plate" metallic sounding. Powerful, thick reverb with various parameter presets.

$ 88  Contact Us  


Need your guitar or bass amp tuned up? We are now doing repairs, upgrades, and modifications to all types of guitar amps. Orange, Mesa Boogie, Fender, Marshall, Hughes and Kettner, Peavey, Ampeg, Gibson, Silvertone, etc. Read more about it here


ART DMV-Pro

Audio Proz Inv #: 31553

New in box, dual processor, true stereo multi-effects, 4x mono channel! **New Low Price!**

$ 230  Contact Us  

ART Alpha 2.0

Audio Proz Inv #: 63181

Multiverb. Unit does multi effects, pitch, delay, reverb, and EQ. Very quiet 20k bandwidth. Face wear but low use #8 condition 

$ 128  Contact Us  

Alesis Quadraverb 2

Audio Proz Inv #: 32898

MIDI controllable, quasi true stereo, must be programmed carefully to do dual channel effects

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Alesis Quadraverb +

Audio Proz Inv #: 20851

Nice cosmetic condition, manual and power supply, many excellent effects programs installed, OK reverb program, stereo I/O, level I/O control. With Alesis updates.

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Alesis Quadraverb

Audio Proz Inv #: 62456

Multi effect. Update power supply (internal). Update battery and back up charge circuit. Cleaned and checked. Low use bright display. PRICE IS FOR UNIT WITHOUT POWER SUPPLY (some people may not need this) #8+ condition

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Alesis Nano Verb

Audio Proz Inv #: 50902

with power supply #8+ condition clean low use frame

$ 76  Contact Us  


All Remotes are now 25% off or Free Shipping!!!  (Reel to Reel remotes excluded).


Alesis Midiverb III

Audio Proz Inv #: 41202

Excellent condition #9 condition, update powersupply, some mods done, this unit is quieter than regular midiverbIII.

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Alesis Midiverb II

Audio Proz Inv #: 24264

Excellent condition, basic reverb, does flange, chorus, delay, basic stereo output reverb, airy clean quality

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