(The red power LED on the upper right above the Master Tune knob is a modification)
Finally I own this well known monophonic 1980 synth. Although a stick tell it is out off warranty since the 4th of October 1981 it playing fine thanks the faithful repairs and calibrations done by H.S.
The Pro-One features these connections on the back:
The powercord is not detachable :-(
- audio out
- audio in
- filter CV in
- gate out
- cv out
- gate / ext. clock in
- CV in
I installed the Pro-One Keyboard Replacement Kit to get a quit and even more reliable keyboard action. Easy to do kit that just needs screwdrivers to install.