

This switch switches the audio circuit between the original av famicom audio circuit and the upgraded stereo sound circuit. You can flick the switch real time while the system is running and the audio circuit changes instantaneously with zero delay.
Also my first couple of completely commissions showed up at clients houses. Here's some pics of the system running on a flat screen to show how clean the video quality is....
through a xrgb3:

straight into the tv:

