via this auction
"Keyboard has been recapped, new wiring, battery replaced/modded, tuned/calibrated, includes complete Tubbutec Mody/Poly kit which adds midi among other features to this classic synth. The kit cost €179 + ship. So basically $200. Nice thing is you don't have to wait on shipping or stock availability.
The bad:The Arp suddenly stopped working. Everything else works perfect. It was working fine, attempted to send a CV via a Sub-37 to the Arp clock input, after that, it stopped working. The arp button works (engages arp mode), hold works in arp mode, keys work in arp mode, LED correctly follows arp speed via rate knob, but pattern does not arp. It's almost like the clock input is still looking for a cv signal. I imagine this is a relatively easy fix. I have adjusted my price to reflect this. Aside from that and a few cosmetic blemishes (chipped wood, see pics), all is excellent."
it does not use voltage trigger but a S-trigger ("short circuit trigger", sometimes called "negative trigger"): this involves keeping voltage high normally, shorting the trigger circuit whenever the note should play. S-trigger is used by Moog, Korg and Yamaha synthesizers, among others.
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