Palmer PGA-04, pre-chrome knob old school version. Works 100%, I use it weekly to jam my amps in my control room with no cab, sounds awesome with a cranked 50+ watt tube amp running through it! Cosmetically it's obviously road-worn, I've had it for years and carried it through multiple studios and states and it shows. The bruises don't affect the sound, obviously! Looking for $220 or trade for pedals (open to most, just ask).