This is a KORG pedal tuner. I purchased it new and have been using it for about six months. It has some signs of use, but all functions work normally. I'm selling it because I've switched to a multi-effects unit with a built-in tuner, so I don't use it as often anymore. High-precision digital display tuner with buffer function. - Model Name: Pitchblack XS - Features: Buffer/True Bypass selectable - Display: Digital display - Power: DC 9V