Supertech CS-164 - Audio and Sound Settings; Loudness Control; ESP and Beep Mode

DSP can b e selected by VOL+ and VOL- key.
POP M ---ROCK M--- CLASS M --- FLAT M --- DSP OFF
2) LOUDNESS CONTROL
When press the SEL button for more than 2 seconds, it is
activated as selecting mode of these function.
LOUD ON/OFF mode is selected by VOL+ and Vol - key.
The bass and treble response will be boosted.
3) ESP MODE
When press the SEL button for more than 2 seconds, it is
activated as selecting mode of these function.
4) BEEP MODE
When press the SEL button for more than 2 seconds, it is
activated as sele cting mode of these function.