ARP Quadra Serviced

For sale is a rare vintage Arp Quadra analog synthesizer. We have completely serviced this synth, including a full recap and cleaned or replaced sliders as needed and new aftertouch sensor installed. There are still a couple of issues we have not been able to solve due to limited/budget for this project: some of the memory preset LEDs aren't lighting up properly (but all the presets/buttons are working). This seems like a minor issue. We also can't get the lead voice to calibrate / tune properly, the tuning tends to drift so you have to recalibrate/retune it regularly to be in tune with other sections of the synth. We have not had enough time in our schedule to finish solving this issue so we are putting it up for sale in as-is condition, for parts/repairs. After everything we spend to acquire this and servicing costs we are actually taking a loss on this one. Perhaps the right owner can invest more time in solving these last couple of issues. It's still very much usable in its current condition for the other voices besides the lead (and lead is usable if you compensate for tuning). We might have the original stand and manual for this and will update the listing if we locate either.