Featuring EZ Compose technology for crafting patterns on the fly, COSM amp and effect modeling for the guitar and bass plugins and a compact design, the Boss DR-880 Dr. Rhythm is an originator of the versatile drum machine. Capable of holding up to 1000 user-created patterns with 440 percussive sounds preloaded, the DR-880 can bring an engaging electronic element to your next practice or a trusty workhorse for live shows.