Panasonic TV audio output question

Hello,

I have a Panasonic 42PZ85B television. Can anyone tell me if this set has a variable stereo output that can be controlled from the remote, other than the headphone output which requires that one delves into a menu to adjust it. Ideally i want to mute the built in speakers and send all audio via the RCA outputs and adjust it using the TV remote, for simplicity.

Thanks,

Dave