DR-550mkII, DR-550: Synchronization
The DR-550 can be synchronized to any MIDI device that transmits MIDI clock. Use the following procedure to set the DR-550 or DR-550mkII to external sync:
1. With a MIDI cable, connect the MIDI OUT of the External device to the MIDI IN of the DR-550.
2. Hold SHIFT and press VOICE ("SYNC" will appear in the display).
3. Release VOICE but continue to hold SHIFT, then press the RIGHT ARROW/+1 button so that "MIDI SYNC" appears at the top of the display.
Note: "nn" will also show in the lower section of the display.
4. Release SHIFT to return to play mode.
Note: The selected song or pattern in the DR-550 will play only when receiving a "MIDI Clock" message. The external MIDI device determines the tempo and the DR-550 will follow in "sync" when you start or stop the external unit.