


Roland D-50 received a TEC Award in 1988 beating Yamah DX7 in popularity and waiting for the Korg M1 to come and take its laurels already the next year. The filter section is represented with a low pass resonant filter TVF (Time Variant Filter) while the amp is also defined as TVA. The synthesis is based on Roland’s Linear Arithmetic technology combined with 8-bit PCM samples onboard. The architecture offers bitimbrality, 32 oscillators providing 2 per voice while in dual or split mode there are 4 per voice available. It features 16-voice polyphony which becomes an 8 one in a split or a dual mode. The unit features fewer controls though the circuit is identical.ĭ-550 is based on the capabilities of one of the most popular digital synthesizers not only ever created by Roland but ever emerged on the market D-50. D-550 is a rackmount version of Roland’s popular D-50.
