Sony MHC-GT5D Operating Instructions Manual page 61

 If one of the systems is not equipped with Party Chain function
Example: When connecting using this system as the first system
First system
* Connect the system which is not equipped with Party Chain function at the last system.
Be sure to select the Audio In function on this last system.
The last system is not connected to the first system.
• •
You must select the first system as Party Host so that all systems are playing
• •
the same music when Party Chain function is activated.
Continue the
connection until
the last system
Second system Last system*
61
GB