If you're into vintage gear, you've probably come across our website. We've been buying, refurbishing and selling vintage synths and other electronic musical instruments for close to 30 years now. We're perfectionists and take our business, our gear, and our customers very seriously, so buy with full confidence - we won't let you down.

Our prices here may seem high, but we are a legit business with real business expenses, not your typical amateur seller with a Reverb store. Please click on our user name to read more about our shop so you better understand our prices & high standards.

Reverb and merchant fees are of course already added into our prices here.


We bought this from a customer who thought it was working years ago when he last used it. It wasnt working when we got it, so we opened it up to check it out and it was immediately obvious that someone had been inside it and attempted to repair it in the past.

We pay our tech by the hour, and it's not worth it for us from a business perspective to invest the money in refurbishing this unit because it's a relatively low value item and it's likely the value of that restoration time will exceed the maximum we could sell this unit for, but someone who's into DIY electronics repair as a hobby could make this a fun project, or this might be a good parts donor, though we would hate to see it gutted.

Our tech spent an hour assessing this unit, and here's what he noted before we told him to stop working on it: 

power supply capacitors should be replaced, as usual.
voice board: loose pcb, all spacers are broken. someone attempted to fix this with epoxy glue. 
D/A works.
Effects board does not.
ICs (4570 inline) dead.
Volume pot may or may not be broken.

steps suggested:

rebuild power supply
install new spacers
replace IC opamp
fix output board
redo wiring to power line
test and fix any remaining problems

We can't guarantee the above is accurate, but hopefully it'll be helpful to whoever ends up with this unit. 

While our tech is confident that he could repair it, tech skills vary and we have no idea what whoever ends up with this item is capable of, so we have to make it clear that this unit is being sold broken and strictly as is, with no guarantees whatsoever. We do not accept returns or issue refunds.

We got this unit without rack ears or a power cable, so this sale won't include either - what you see is what you get, nothing more and nothing less.


-Please read our shipping policy & terms before buying. They are firm.

-International customers please contact us before buying and wait to hear back to make sure shipping quote is accurate.

-***WE NEED APPROXIMATELY 1-2 WEEKS TO PACK AND SHIP ITEMS, AND DELAYS CAN OCCUR. If you can’t wait patiently, please don’t buy this item as we can’t rush things.***

-We are an online-only store and are unable to offer local pickups.

-Quality control and customer satisfaction are our top priorities. We go to great lengths to test, service and even future-proof most (but not all) of the items we sell so they’re better than others you may find. We test most items multiple times and overlook nothing.When items are not working perfectly, they are accurately described. Physical imperfections can be seen in the detailed photos present here. This sale includes only what's shown in the photos (or itemized in this listing), nothing more and nothing less. Please search our website for additional photos.

-All sales are final. We do not accept returns or issue refunds, so please be sure you know you want this item before buying it.

-Due to the vintage and electronic nature of our items, we sell all items strictly as is, only because we cannot control what other people do to our items once they leave here, we cannot offer warranties on parts that are decades out of their original warranties, and we don’t want to be scammed or inconvenienced by people who abuse return policies or have buyer's remorse.

-In the extremely unlikely event that there’s a problem with an item we sell you, please contact us immediately so we can try to help.

-Thank you so much for your time, interest, and support. We look forward to doing business with you! If you need anything, please don’t hesitate to ask.

-Any date of manufacture shown here is just a guess.

-We generally set our condition ratings to "excellent", but please refer to the photos and writeup so you can have a better understanding of this items condition.

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Listed7 months ago
ConditionNon Functioning (Used)
Non-functioning items do not work as they should. All known issues should be described in the listing description.Learn more
  • MKS-20 Digital Piano Sound Module
  • 1985
  • MIDI Through
  • MIDI Input
  • 16 Voices
Analog / Digital
  • Digital

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Astoria, NY, United States
Joined Reverb:2019

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