Cool toy. I have an Ultrem that I'm keeping but that's a $400 dollar trem. I'm selling this for $35 shipped in the CONUS Al La Carte or $40 with the power supply in case you need one. The power supply is a 9V AC. What does it do? Lots. Here's a link to someone much better qualified to fill you in on this fun device. Alesis ModFX Ampliton Tremolo/Autopan | ActiveMusician Alesis Ampliton + Rotosphere + Rhodes - YouTube Will trade for a Bitman. Or one of those Muff clones with more knobs that a Hooters at shift change. Or a bunch of those cool aluminum boxes and other parts for making DIY pedals. I'm open minded.