: I would like to know what opto-isolator was used in 7 knob effect amps, such as solarus and sceptre, in the tremolo section. I am sure you guys can help me out. Thank you in advance.
Mike;
My best guess is that the opto-isolator used by Sunn was a proprietary part that was made for specifically for Sunn. I haven't seen it used in any other amp and it does not appear to match the replacement unit made for Fender amps. If anyone out there knows of a repacement source for the Sunn opto-isolator, please let us know (I need some for my Sunn amps too!)
Ryan
