The Yamaha RX21 Digital Rhythm Programmer is a sophisticated electronic music instrument that combines microcomputer control with a digital PCM sound storage system. It features nine digitally recorded percussion instrument sounds, including snare, toms, bass drum, hi-hats, crash cymbal, and claps, which are indistinguishable from live instruments. The unit allows users to program virtually any type of rhythm pattern using 44 preset patterns or custom compositions.
| Number of Preset Patterns | 44 |
|---|---|
| Number of Instruments | nine |
| Battery Life | about 5 years |
The RX21 includes Medium-tuned snare, three tom-toms, bass drum, open and closed hi-hat, crash cymbal, and hand claps.
The Lithium backup battery used to preserve patterns and songs has a life of about 5 years.