Function of each button
1. : Power
2. TREBLE-: Lower treble level
3. TREBLE+: Raise treble level
4. VOL+: Raise volume
5. VOL-: Lower volume
6. : Previous track in Bluetooth/ USB mode
7. : Next track in Bluetooth/ USB mode
8. Music: Music EQ mode
9. MOVIE: Movie EQ mode(cannot adjust bass/treble)
10. DIALOGUE: Dialogue EQ mode
11. BASS-: Lower bass level
12. BASS+: Raise bass level