BOSS TU-30 Tuner and Metronome

The Boss TU-30 is a combined tuner and metronome sporting an on-board mic and a 1/4" input jack for guitars and basses. The TU-30 features multiple tuning modes for measuring pitch, as well as multiple rhythmic patterns for improving your groove whilst practicing. Its tuner features an accuracy of ±1 cent, while its metronome can demarcate between zero and nine beats per measure.