• 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
• Better beats, better practice The Note Mixing function allows you to instantly create a variety of beats by adjusting the levels of five different note values. Front-panel sliders, buttons, and a large rotary dial provide instant, hands-on access to edit parameters. Select four different click sounds, including a human voice-counting sound that will help you know your place in the bar. The DB-90 is also equipped with realistic PCM drum patterns, for developing your accuracy and rhythmic feel effectively.
• Plug into rhythm coach Expand your rhythmic horizons with Rhythm Coach. This innovative follow-along feature has four training modes to help build your accuracy, speed, and endurance. With the DB-90's onboard microphone, you can use the Rhythm Coach functions with acoustic drums, or plug a Roland V-Pad into the trigger input. Play along, and chart your progress.
• Many uses Drummers can connect to the DB-90 via Roland V-Pads or the internal microphone. Guitarist and bassist can directly plug into the DB-90 without any other gear required, and monitor via connected headphones -- practically any type of instrumentalist can benefit from the DB-90's features. And for those who wish to sync to an external sequencer for more elaborate accompaniment, they can do so with the DB-90's MIDI input. This stage-oriented feature is especially useful for drummers.

Technical Info:
Metronome:
-- Tempo: 30-250 (Accuracy: +/- 0.1%)
--Beat: (beat1) 1-9, (beat2) off/1-9
-- Pattern: 8-beat x 4, 16-beat x 3, shuffle x 3, funk x 2, jazz x 2, blues, techno, house, country, reggae, clave 3-2, clave 2-3, salsa, rumba, bossa nova, samba, waltz, tango, mambo, chachacha, march (30 kinds)

Rhythm coach: time check, quiet count, gradual up/down, step up/down

Reference Tone:
-- Reference pitch: A4=438 Hz-445 Hz (1 Hz steps)
-- Reference tone range: C2-B6 (5 octave, 12 semitone)

Memory:
-- Metronome: 50
-- Reference tone: 10

Auto Power Off function: turns unit off after 60 min

Indicators: LCD display, tempo indicator LED x 2

Connectors:
-- Trig in jack
-- Start/stop jack
-- Memory up/down jack
-- MIDI IN connector
-- Phones jack x 2 (stereo 1/4 in. phone type, stereo miniature phone type)
-- Input jack
-- AC adapter jack

Power Supply: dry battery (R6/LR6 (AA) Type) x 2

Accessories: dry battery (R6 (AA) Type) x 2, soft case, owner's manual

Dimensions: (W x D x H): 4 13/16 x 6 1/2 x 1 1/2 in.
Weight: 1 lbs.