Easily tune your guitar or bass on stage with this chromatic pedal tuner from Monoprice! This tuner is designed to fit into your pedal rack and features a heavy-duty metal construction and activation button. It has two 1/4; TS outputs, normal and bypass. The normal output is muted whenever the tuner is activated and the bypass output ignores the tuner completely and outputs whatever comes in over the 1/4; TS input jack. It has a tuning range from A0 (27.5Hz) to C8 (4186Hz) and is accurate to within ± 1 cent. It can be calibrated to between 436 445Hz in 1Hz increments and supports the application of 1, 2, or 3 flats to the tuning. The pedal is powered with either a 9V alkaline or heavy-duty battery or with a 9VDC power adapter. Batteries and power adapters sold separately.