The Roland RD-500 is an 88-key digital stage piano that was first introduced in 1994. For a piano-like feel, it has a weighted “Hammer Effect” keyboard. It built upon earlier RD models with 28-voice polyphony and 121 sound variations (including organs, strings, grand pianos, and EPs). It is a portable and adaptable instrument for live performance because it has built-in chorus, reverb, and a 3-band equalizer in addition to MIDI capabilities.
