The DD9/DD20 is equipped with three Auto Roll effects that help enhance playing. The effects include Echo, Flam, and Roll. Each of these effects varies according to the selected tempo so that the initial strike starts the effect and the DD9/DD20 keeps the beat throughout the effect's duration. Auto Roll effects will only work with the Percussion Pads.
- Press the [AUTO ROLL] button once to enter 'Auto Roll' mode. The current Auto Roll setting will appear in the LED display for approximately 3 seconds.
- Select an effect from the list next to the [AUTO ROLL] button (Off, Echo, Flam, or Roll) and press the [AUTO ROLL] button repeatedly until the desired effect setting appears in the LED display.
NOTE: It is important to remember that the Auto Roll function may produce unexpected effects or not produce any effect at all, depending on the Voice selected and the tempo setting. The Auto Roll OFF setting is automatically selected when the power is turned ON.
Reference: Owner's Manual, p.7