Enjoying The Same Source In Multiple Rooms (Party Mode) - Yamaha Aventage RX-A780 Owner's Manual

Enjoying the same source in multiple rooms (party
mode)
Press PARTY, and then the party mode allows you to play back in Zone2 the same
music that is being played back in the main zone. During the party mode, stereo
playback is automatically selected for all zones. Utilize this function when you want to
use main zone music as background music for a house party.
Each time you press the key, the party mode is turned on or off.
Note
If the party mode does not work on Zone2, set "Party Mode Set" in the "Setup" menu to "Enable". For details,
see the following:
▪ "Setting the use of switching to the party mode on Zone2" (p.138)
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