1. POWER ON
Pressing the green "POWER" button and the w h i t e " M u t e " b u t t o n , s i m u l t a n e o u s l y, switches on the power to the convenience outlet sockets on the back of the S84d.
2. POWER OFF
Pressing the green "Power" button and the white "Volume Up" button, simultaneously, will switch off the power to the convenience outlet sockets on the back panel of S84d.
3. VOLUME
:VOLUME UP 
:VOLUME DOWN
NOTE: Volume settings in all rooms are independent of each other.
4. MUTE
Pressing the "Mute" button will apply full mute to the audio. This function can be used as a "local off" and will not affect other rooms.
5. INPUT SELECTOR
These buttons select any one of the eight sources that are connected to the inputs of the S84d (A1 through AV8).