The VS-41AV is a high-performance switcher for composite video and unbalanced stereo audio signals. It switches any one of four inputs to a single output. - High Bandwidth - 520MHz (-3dB). - Mechanical (Passive) Switching - No power required. - Desktop Size - Compact size. 2 units can be rack mounted side-by-side in a 1U rack space with the optional RK-81 adapter.