4 In 2 Out Digital Optical Audio Switch Splitter Toslink/&nbsp;SPDIF Matrix Switcher with Remote Control Combination of Switch and Splitter: 4 Inputs for Optical SPDIF / TOSLink sources and 2 Outputs for receiving terminals (amplifier, AVR, soundbar, headphones etc.). Active IC Circuit (not a mechanical switch) for Optimum and Lossless Signal Transfer; Reliable & Flawless Switching. Support Data Rate Up To 16Mbps, formats up to 192KHz; Support Output Distance Up To 40M. Over-voltage protection can prevent the damage caused by connecting unmatched power adapter to the machine. Offer solutions for noise, space and security concerns, data center control, information distribution, conference room presentation, school and corporate training environments.