Boss DB-90 Dr. Beat
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