Bought cheap off friend in 1980 during my punk/garage years, but it's only sitting around as I've gone solo acoustic nowadays. Don't ask any gearhead questions as I don't know any answers, I can only describe the amp. It has two plug-ins labeled Lead and Rhythm, and five knobs for bass, treble, midrange, brite, and reverb (and on-off switch of course). I haven't plugged it in for a long time to see if it still works since I'm a little afraid of it blowing up, but I assume a Sunnhead could check this out. I live about 20 miles southeast of Philly and anyone who wants to or can pick it up to make music with it can have it. If you post interest we can exchange info.