2x9-band EQ + volume. It has an extremely beautiful sound. I used it for guitar (with multi-effects) but in the meantime I got a BOSS GT3 and this is included in it, so I would sell this. But it's not fundamentally for guitar, but it can be used for it just the same. It was originally DIN-plugged, but it was rewired to stereo jack plugs. The front panel is in good condition, the cover has scratches. Can be tested in person. No trades for now. Courier/post ok.