I had been using a Behringer tuner pedal, but it tracked slowly and often had trouble picking up a signal from my acoustic guitar at all if there was much noise on stage

No signal loss

There is no noticeable white noise when it is not active and it kills the signal completely when it is activated

This pedal is much quicker and has no trouble finding a signal

Red and green LED’s to indicate sharp or flat plus led bars on the display to indicate the same in more detail.

Works as it should.

It works as it should.