7 Adjust sound
During play, you can adjust volume and select
sound effects:
Function
To increase/decrease
volume
To mute/unmute sound
To turn on/off instant power
boost
To turn on/off dynamic bass
enhancement
To select a preset sound
effect (ROCK, OPTIMAL,
and TECHNO)
EN
14
Action
Press VOL +/-.
Press and hold
MUTE for two
seconds.
Press MAX.
Press DBB.
Press DSC
repeatedly.