Fully Expanded Ensoniq MR Rack, latest OS 1.53, all EXP cards... The One To Have image

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Don't miss your chance to get the very rare and desirable MR Rack with three great EXP boards installed (The Real World EXP1, Urban Dance Project EXP3, Perfect Piano EXP4) - These boards sell on average $200 each on eBay - Everything is fully tested and guaranteed

The rare FIZMO was based on the Mr Rack and has many transwaves in common! The MR Rack is legendary and needs no introduction. It supports up to three expansion boards - all installed. I have installed the very latest 1.53 OS ROMs released for this machine. It is in excellent physical shape with virtually no Rack rash on top of bottom. It is not perfect but in great shape for its age. The power button has some damage but only cosmetic.

All my items are guaranteed to arrive working perfectly as described, but  please be aware there are still a few bugs even in the latest OS. The most notable is it can get confused by MIDI controllers which send messages not supported by the MR Rack, like NRPN controls. When this happens, a sound from a soundset that is not selected might play. Nothing to worry about if you know you have this kind of gear. The other is that the volume knob is a little touchy but works fine once it's in place.

Product Specs

Excellent (Used)
MR Rack
Digital Synths, Rackmount Synths


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About The Seller

shea alterio presents the night crew digital synthesizer museum
Joined Feb 2017
Cambridge, MA, United States


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Shipping Policy

Ships from Cambridge, MA to:

Continental U.S.
Everywhere Else

Please, no PO boxes for synthesizers and other larger music gear. If your order is ROMs or other small size parts like that, PO box is fine.

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Return Policy

Return Window

This product can be returned within 7 days of receipt.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.


Buyer receives a full refund in their original payment method less any shipping charges and a 15% restocking fee.

This listing sold on 1/27/2018

shea alterio presents the night crew digital synthesizer museum

Cambridge, MA, United States
Joined: Feb 2017

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