PURPOSE: To supply respective input signals to output terminals without interference and disturbance by providing a coupler and a switch for supplying the input signals to the output terminals selectively between input terminals for plural wide band signals and the two output terminals.

CONSTITUTION: An antenna input terminal 10, a cable television input terminal 12, auxiliary terminals 14 and 16 for signal input of, for example, a video disk, television games, etc., and an external VTR signal input terminal 18 are povided. Further, an output terminal 20 for VTR and an output terminal 22 for monitor TV are provided. Between the input terminals and the output terminals, manual switches SW-1 and SW-2 for selecting and outputting one input signal to the terminals 20 and 22 are provided and between contacts of the SWs and terminals 10, 12, 14, and 16, couplers 24, 26, 28, and 30 for preventing interference and disturbance among respective input signals are connected. Those switches SW-1 and SW-2 are five-circuit, five-contact rotary SWs consisting of SW-1a∼SW-1e and SW-2a∼SW-2e respectively and distribute one input to two outputs with low loss without disturbance.