Built with an ultra-compact design, streamlined 12-button effect interface and a total bank of 48 available sounds, the Boss DR-550 Dr. Rhythm is a powerful option in the world of entry-level drum machines. Capable of fills and shuffles with 32nd notes and triplets available in programming, the DR-550 also sports five bass and six snare sounds with the option for timbre selection to develop an arsenal of beats and patterns. More than just a practice tool for guitarists, this powerful little beatbox is an excellent companion for bedroom producers and old-school DJs alike.