Roland DB-900 Owner's Manual page 16

Appendices
Sample 2
Hold down the MEMORY B button while you switch on the power.
fig.010
Then, select either the MEMORY A button or the MEMORY B button.
MEMORY A: Chorus Bass
Transparent chorus sound suited for slapping or flat-picking. The amount of modulation can be controlled with the D-CHORUS
INTENSITY knob.
fig.12
(OFF)
MEMORY B: Overdrive Bass
Wild overdriven sound of the 70's. Great for flat-picking. Use the TREBLE knob to adjust the edginess.
fig.13
(ON)
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