d9433940_nd___Surround_Sound_Processors__Recommendation
[Issue / Feature] Video Switching [Recommendation] 
Many surround sound processors have the ability to switch your video inputs to follow the switching of the audio inputs. This is both a convenience and a method of expanding the number of video inputs. Some surround sound processors also offer on-screen displays of the surround sound processor functions, which may make setup and use easier. If you want to use video switching in your surround sound processor, be sure that it supports enough inputs of the type you have (composite, s-video, component, or RGBHV). For the highest performance, you may prefer a dedicated external video switcher.
Goodwin's High End - Surround Sound Processors
Recommendation