#2	This compact switcher box allows connection of up to 4 stereo sources input and selects 1 audio output through the rotary knob Note when 1in 4out 4 outputs are not simultaneously
#3	Suitable for multiple sources signal select or large area or multiroom paralleled amplifier distribution of the same signal playback
#4	Use specialized audio rotary switchLossless device easily switch between different audio in or out
#5	This is a passive nonpowered device Plug and play