Having bought a pre-owned Sony FM stereo tuner through eBay, it came without any manuals. It soon became clear that to get the best from this excellent tuner I needed a decent manual because much of the operation was not intuitive to a newboy to hi fi like me. I managed to download the official Sony multi-lingual manual from Owner-Manuals.com with no problem at all - a really quick and easy service. I'm very glad I did because I found out all the operations of the tuner and was then able to not only set it up quickly but also to get much more from it that poke-and-hope trialling would ever achieve. In my book $4.99 very well spent.
Text excerpt from page 22 (click to view)
Surround Button The benefits of surround sound are enormous. You can be completely enveloped in sound; just as if you were at a concert hall or cinema. The surround setting switches on and off each time the SURROUND button is pressed.
MENU STR N
(1) The surround settings are memorised separately for each input terminal (AV, COMPONENT/RGB and PC).