Sansamp GT2 amp simulator/distortion pedal. Great condition, some signs of use but all buttons and knobs function perfectly. Jacks are solid, will take 9v battery which works, I had it plugged into a power supply walrus canvas and it was just fine. No original box or manual, however you can find it on Tech21s website with some preset suggestions.
I absolutely love Tech21 products, especially this GT2, I can't say enough good things about it. I just upgraded to the Sansamp Tri-AC which is basically same thing only without the mic spots and it allows for 3 presets which makes it way easier playing live. This is a staple on my rig and I dont' play any shows without it. No wonder Kurt Cobain used it for his sound. I think the GT2 is much easier to program rather than the Classic version with all the micro switches. I owned both and preferred the Gt2 just for that reason, especially when you can achieve the same tones. You won't be disappointed with it.