NUX HD PITCH Mini Pedal Tuner is a precise tuner with full colored LED screen and HD visuals. And it is perfect to be "first" in a signal chain.
When you engage the pedal, it's an accurate tuner.
When you disengage the pedal, it's a signal buffer (in Buffer Bypass mode).
HD pitch mini pedal tuner offers selectable True Bypass and Buffer Bypass modes to deliver your signals according to your needs in the effect pedal chain.