Title link takes you to shots via this auction.Details:
"Very hard to find and rarely working, Acoustyx IS-1 Image Synthesizer, 100% functional. Its a modulation type effect, most similar to chorus, or a rotating speaker, but unlike any other such effect I've heard, or used in the sense that the effect is useable within all the control ranges. Manufactured by the Highland Corporation of North Springfield Vt, you'll see from the pictures that it operates via 8 c cell batteries!! Extremely rugged construction and uses higher end Allen Bradley potentiometers. I have no idea of its date of manufacture, but would guess at late 70's to early 80's. There is no external power supply input, however there is an unutilized 1/4 jack next to the output that could be used to supply 12vDC. This jack appears to be factory installed, and is identical to the others and its solder lugs appear untouched."
If anyone knows more about this unit please comment.
