A Fast and Easy Solution for Professional-Sounding Drums.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.* 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