via this auction
"CONTROLS: Volume: controls the output volume. Intensity: controls the amount of fuzz. Fuzz: fuzz on/off.
Very suitable not only for guitar, but as processor for analog synths, drums, vocals or for any type interesting sonic experiments.
Connectors : Line IN and OUT on standard 1/4'TRS mono jack.
The unit is powered by standard 9V power adapter or 9v bar battery."