BOSS TU-2 Chromatic Tuner, used condition. - Model: TU-2 - Brand: BOSS - Type: Chromatic Tuner - Output Terminals: Output, Input - Power: DC 9V - Condition: Used Thank you for viewing. Selling to organize my equipment. Operation has been confirmed. There is a general feeling of use and scratches, but it functions without any problems. The rubber part of the screw receiver has cracked due to aging.