The used Sansamp GT2 that I scored from E bay arrived today. Aluminum box, four knobs (level, high freq, low freq, drive), three slider switches (mic, mod, amp) and a footswitch. I placed it like so: BSW>Super Comp>GT2>350X>Goliath III First the little switches: These determine the limits of your EQ. The knobs allow for some tweaking within the range defined by the switches. Mic has three positions: off axis, center, classic. (shrug) I thought any position was good. Mod also has three: Hot Wired, Hi Gain (gritty setting) and clean Amp: Cali/Mesa Boogie (usable, angry setting for bass), British/Marshall ( too tinny), Tweed/Fender (clean bass) OD quality: IMO it's tamer than a Sparkle Drive even at Hi Gain + California settings. The boost does wake your amp up. I played with it a bit by placing my American Woman upstream of the GT2. I didn't like the way it smoothed out the nasty torn driver qualities of the AW. Tweakability: Very adjustable. If you take the time to figure it out you'll find the sound in your head. The knobs respond well. The Mod and Amp switches give you a lot of different usable tones. IMO British was too trebly for bass but it was late already and I didn't want to test it by boosting my amp's EQ and cranking her up. BTW, Don't operate the sliders without turning your amp down. Trust me on this Overall, it's a good pedal to have if you like a powerful multi voiced EQ unit. I think the target market is the traveling musician who can't determine what kind of gear he will be plugging into at the places that hire him. Don't buy it if you're looking for grating distortion.