This is a tech21 tri-od distortion effect pedal. It can also be used for bass. Operation is generally good, but the LED part is partially dented, although it lights up and functions without any problems (this was the case when I purchased it). There were times when the knob for the (never used) tweed channel produced scratchy noise. I really liked this effect pedal and used it as my main one for many years. Due to the above reasons, I am selling it as a junk item. There are no included accessories.