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” Here’s a rare and hard to find Wersi EX20 additive synthesizer. This is the rack mount version of Wersi’s MK1 synthesizer. It’s in excellent condition and is fully tested and works perfectly. Comes with the wooden outer case that can be removed for rack mounting, I’ve included pictures with the case both on and off. This synth uses a fairly complex matrix system for programming, it originally had cardboard overlays that are placed over the matrix in order to navigate the system. I no longer have these overlays but can provide them in PDF form and they really are a must have in order to understand this synth. Will include free shipping insurance.” Click here to search for synths on eBay