Yamaha SU700 Owner's Manual page 99

Procedure
1.
Press the EFFECT/[EFFECT 1] button. The effect type "AMP SIM" that is assigned to
EFFECT 1 will be displayed.
2.
Since the amp simulator effect is a system effect (
independently adjust the depth of the effect for each track.
Use the LOOP 1 track knob to set "AMP SIM=040." At this time you can press the
pad to hear the result.
Rotate the LOOP 1
track knob to set
In this example, we simply used the amp simulator that was assigned to [EFFECT
1] by default. However you are free to choose from 43 types of effect, and adjust
the effect parameters as desired.
Chapter 2 Tutorial
p.189), you can use the knobs to
99