Zektor CVS4 4×1 Component Video Switcher Used as 5.1 Analog Audio Switcher John E. Johnson, Jr.January 25, 2008 The Zektor CVS4 4 x 1 Component Video Switcher can be used to switch 5.1 analog audio from two or more DVD players to your SSP or receiver, so you can listen to the new high definition audio soundtracks from HD DVD and Blu-ray movie discs. Switchers