Boss DB-90 Dr Beat Metronome Practice in style with the flagship of the Dr. Beat Metronome line. The new DB-90 is loaded with quality sounds and drum patterns to make your practice sessions less mundane and more musical. There’s a Rhythm Coach function with an onboard mic, a reference-tone function for tuning, an Instrument input, MIDI input, and other handy tools to make learning fun and effective. • Quick rhythm customizing with Note Mixing function, dozens of play-along drum patterns also built in • Dedicated sliders, buttons, rotary dial, and large backlit LCD for user-friendly operation • 4 metronome (including human voice) sounds • Reference Tone function makes it easy to verify tuning by ear • Practice with the Rhythm Coach by connecting a V-Pad (optional) — rubber pads and acoustic drums can also be detected via built-in mic • Direct connection with guitar and bass, plus headphone monitoring • Footswitch control for hands-free play/stop, and MIDI input for sync to external sequencers