Whirlwind MultiSelector 4X 4-Channel Input/Output Switcher (MLTSEL4X)Whirlwind MultiSelector 4X 4 Channel Input Output Switcher (MLTSEL4X) This four channel input output footswitch gives one step access to your instruments and amps. The best channel switching device money can buy. Send one input to one of four outputs Route any one of four inputs to a single output The MultiSelector 4X also features LED indicators and 1 4 unbalanced inputs and outputs. Power and control to the remote footswitch are connected via mic