Roland DR-3 Dr. Rhythm With the DR-3 Dr. Rhythm, guitarists and songwriters can add incredible-sounding drums to their music. This ultra-affordable drum machine includes some of BOSS` best acoustic and electronic drum kits and a selection of bass sounds. Great for jamming, the DR-3`s Rhythm Progressions and multiple variations make it easy to create a realistic-sounding drum track for any style of music. And with Total Sound Control, you can tweak your kits to perfection. Features: * BOSS` most affordable drum machine for jamming or practice * Realistic drum, percussion and bass sounds with velocity-sensitive pads * New Rhythm Progressions with 3 variations each for Intro, Verse, Fill and Ending * New TSC with Sound Shape function and Ambience for professional drum sounds * 100 Preset Styles and 100 User styles programmable via realtime or step recording * Footswitch input for easy live control; runs on AC or battery power