For more info on the UC-1 see my review of it in the November 1983 article on Mu:zines.co.uk archive site.
http://www.muzines.co.uk/articles/uc-1-sequencer/1754
It was a fabulous upgrade for the Pro-One's meagre arpeggiator/sequencer -- but I loved and heavily used the original Pro-One onboard sequncer/arpeggiator in my New Romantics band (well, it was 1980s)... we also played Thin Lizzy and Eagles.

Hoping tonight to be able to plug it in and see if it switches on, for one thing, and makes a noise. The keys were all stuck in position earlier today but I've been running up and down it like a banshee pushing every key down. Only one fails to spring-return to its up position.
Fingers crossed.
