J-Tech Digital Premium Quality SPDIF TOSLINK Digital Optical Audio 3x1 Switch with Remote Control (Three Inputs one Output) Switches Three ways of optical fiber signal inputs switch to one set of SPDIF/TosLink signal receiving device Supports Dolby Digital & DTS 5.1, Dolby Digital Plus; Support PCM Stereo 32kHz, 44.1kHz, 48kHz and 96kHz; plug & play Supports 5.1 channels output up 130 ft; Input can be selected through remote control or button on the switch Over-voltage protection can prevent the damage caused by connecting an unmatched power adapter to the machine NOTE: Please pull out isolation plastic in the remote before first use. Free lifetime technical support from the manufacture and free 1 Year Manufacturer Warranty from J-Tech Digital.