Audio Proz Service and Sales


Roland GR-33 guitar synthesizer

Audio Proz Inv #: 48407

Multi function foot control synth processor. With manuals and GR multi pin cable. Mint condition in box and packing.

$ 280  Contact Us  

Roland HPD-15 Handsonic Drum

Audio Proz Inv #: 31623

Electric drum, new in box (V)

Contact Us  Contact Us  

Roland JSQ-60

Audio Proz Inv #: 19363

Digital Keyboard Recorder -play/reset/load- memory

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland Juno 2

Audio Proz Inv #: 50184

Excellent condition, professionally and carefully cleaned, calibrated, and thoroughly tested. No disappointments here! Vince personal low use Call Us, priced to market Condition #9

$ Call  Contact Us  

Roland Jupiter JX-8P

Audio Proz Inv #: 16326

laptop add-on programmer/controller, very powerful analyzer/synth 8 voice polyphonic synth. Midi, mint cond. Box packing manual, condition #9

Contact Us  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.


Roland JV-80

Audio Proz Inv #: 41774

61-key, 28-voice expandable keyboard, non-weighted synth-action keys. Mid-90's synth, standard sounds of pop music production. Includes all original box, packing, manual, power cable, soft key cover, and 2 expansion packs. Fully checked, excellent condition! Awesome light-weight stage keyboard!

$ 380  Contact Us  

Roland JV-880 Multi timbral synth module

Audio Proz Inv #: 61772

several programs loaded onto machine including Orchestral II expansion board SR-JV80-16. Memory battery checked, good. Minor wear and tear, some minor rack rash, otherwise intact. some, scratches on top cover. #8 condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland JX-3P Synthesizer

Audio Proz Inv #: 45712

We love this analog polyphonic synthesizer! DCO (digitally controlled oscillator) technology marries the ease and stability of digital with the warm, desirable sounds of analog. 32 factory programs and memory for an additional 32 user programs. 128-step, six part sequencer can be triggered by sync voltage from external drum machines and other devices. PG-200 Controller available for real-time control of all parameters and patches. Excellent #9 condition with one tiny dent at upper corner of face, almost invisible.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland Linear Syntesizer programmer

Audio Proz Inv #: 40370

used in good condition small scratch to face. needs 9v DC adaptor negative tip.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland MC-500 MKII

Audio Proz Inv #: 41923

Roland MC-500 MKII Micro Composer. Upgraded version of MC500. 100,000 note capacity. 3.5" disk, 8 track sequencer, MIDI in thru out1 and out2, tape sync. System Disk included (but not tested). Unit in good shape cosmetically, sold as is for $40.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland MC-909

Audio Proz Inv #: 44858

Left listing up because we may possibly be able to repair these, and may be able to get power supplies. Sampling Groovebox. 64-voice workstation with 16-track sequencer and hundreds of sounds, patterns, and rhythm sets.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Roland MC307 Groovebox

Audio Proz Inv #: 31622

Integrated electronic music workstation (sequencer/sound module) with 64-voice sound engine, 16mb of samples, 240 patterns, 3 fx processors, this product is aimed squarely at DJs, pitch control slider, push and nudge buttons, designed to emulate the operation of a turntable.

Contact Us  Contact Us  

Roland MKB-200

Audio Proz Inv #: 22561

MIDI keyboard controller. Slide controls for depth, rise time, volume. Pitch bend control. A and B bank - program change/patch change options. Cartridge slot, 3 midi out, U and L damper, up and down shift, mode on, U and L volume inputs. Very good condition.

$ 240  Contact Us  

Roland MKS-30 Sample Sound

Audio Proz Inv #: 44921

Memory cartridge M-16C. Great #9 condition.

$ 60  Contact Us  

Roland MKS-30 Sound Module, PG 200 Programmer

Audio Proz Inv #: 37901

6 voice sound, with live time control PG-200 Box! Low use time. This is the last unit left (Vince's personal unit), only used occasionally in home studio environment, mint condition. $600 for the pair

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland MKS-50

Audio Proz Inv #: 48399

Rackmount synth module with power cable and manual. Excellent #9 condition with very minor scratches on edge. Very low use time.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland MPU-101 MIDI->CV interface

Audio Proz Inv #: 15421

Midi to CV converter for controlling analog synths via midi

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Roland MPU-104

Audio Proz Inv #: 42835

Midi Input selector, 5 in, 1 out. Passive box with no power supply. LEDs light with use of boss PSA 120 supply or equivalent power supply can be made available upon request. Cleaned. #9 condition.

$ 68  Contact Us  

Roland MT-32

Audio Proz Inv #: 16515

Multi timbre sound module, very flexible older sound module, loaded with durms keys, easy to use, in like new condition complete with box/packing, manual, and AC adapter

$ 175  Contact Us  

Roland Octapad PAD-8

Audio Proz Inv #: 42876

8 pad Midi trigger. Midi i/o. With original power supply, manual and box. #8 condition- obvious wear on pads, but chassis and all mechanics and connectors in excellent shape. Needs basic cleaning, labels/ stickers from previous user still on unit.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland PG-10 Linear Synth Programmer

Audio Proz Inv #: 43591

MIDI in, out, thru. Cool vintage unit! No cable included. 8/10 condition.

$ 98  Contact Us  

Roland PG-200 Synth Programmer

Audio Proz Inv #: 27735

For use with Roland JX-3P or MKS-30. Allows for the use of sliders and knobs with digital parameters. Excellent condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland PG-200 Waveform Controller

Audio Proz Inv #: 45711

For JX Series synthesizer. With original 6-pin cable included. Has some non-original knobs, otherwise excellent #9 condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Roland PM-16

Audio Proz Inv #: 14708

Pad/Midi interface, table top unit, 8 pads + Bank pad, good cosmetic condition except for deep gouge on top.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Roland RC-100

Audio Proz Inv #: 28512

Remote for Roland S series samplers. S-50, S-330, S-550, etc.

SOLD  Contact Us  

Contact us about similar items or replacement parts.