| 1 | ON | Power up the unit from Standby mode to operating mode. |
| OFF | Switch the unit to Standby mode | |
| 2 | SOURCE [˄/˅] | Select through source input selections. |
| 3 | DIM | Toggle to select display brightness level – dim, bright, or display turned off. |
| 4 | MUTE | Audio is temporarily switched off or restored. Restore audio by pressing MUTE again, VOL [˄/˅], or rotating the VOLUME knob. |
| 5 | VOLUME [˄/˅] | Increase or decrease loudness level. |
| 6 | BASS | Turn ON/OFF Bass EQ function. |
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7 |
BLUETOOTH PLAYBACK CONTROL (applies to an active Bluetooth connection): Depending on the Bluetooth device or source being played, any or all of the following functions may be applicable. | |
| ⏵ | Start/pause playback. | |
| ⏭ | Skip forward to the next song. | |
| ⏮ | Skip back to the previous song. | |