PCM sound engine with 54 sounds onboard with Mix input for playing along with CD players or other audio devices.External dual trigger input for adding an optional kick and cymbal pad.Variety of metronome sounds and patterns (samba, jazz, etc.).Patented mesh head technology for a great acoustic feel.Advanced Rhythm Coach exercises, featuring Stroke Balance and Time Check Rhythm Coach. Advanced Rhythm Trainer with Built-In Sounds. The RMP-3 made headlines when it was announced in early 2005. Today Roland builds on its winning rhythm line with the new RMP-5. Sharing a few key features in common with the popular RMP-3, the RMP-5 has a great-feeling, tunable mesh drumhead, and a convenient one-piece molded body with integrated pad and brain. The RMP-5 strides to the front of the class, however, with its 54 onboard PCM sounds (including snare drums, kick, cymbals, and percussion instruments; the RMP-3 has no built-in sampled sounds) plus an external dual trigger input so you can add a kick and cymbal pad for drum kit practice. The RMP-5 also features an advanced, expanded Rhythm Coach mode.