I’ve been testing the fix on this one for over a year now. When I got it the internal battery had failed. not surprising it was made in 1985.
Replaced it with a CR2032 coin type battery and modified the memory circuit so it would hold the patch memory for a very ,long time. I have basically had it switch off for most of the year to test that the patches I’ve made remain which they do. All buttons keys pitch and mod wheel work as they should so what we have is a prim example of a Sequential circuits classic with a brilliant sequencer and arpeggiator built in. each of the 6 voices can have a different patch loaded to it and each has its own dedicated output. add tot hat the fact you can assigned each voice its own midi channel and you can see why its such a good synth. I’ve included a video on the listing of it in action so you will also get to here the VCOs and filter

and the moster monster stack mode in full action.
http://cgi.ebay.co.uk/ws/eBayISAPI.d…m=290349696870
Need the dosh to pay for a few impulse purchases of late. Oh and road tax rent food and all that jazz.
I hope this goes to a happy home and is well looked after.
You can read up on just how good it is on Vintage synth exploere http://www.vintagesynth.com/sci/multitrack.php
I’m only selling to people in the UK as I don’t have a flight case for this synth and so posting over seas is to risky. Sorry