Oceanheart 4 In 2 Out Spdif Toslink Switcher Splitter Optical Digital Audio Matrix 5.1 Converter 4x2 With IR Remote Control 1. EASY TO USE - Control input/output device by pressing button or IR remoter; LED indicator status working, green light for 4 inputs source, red light A/B for 2 outputs audio device. 2. COMBINATION OF SWITCH AND SPLITTER - 4 inputs for optical SPDIF/TOSLink sources and 2 outputs for receiving terminals (amplifier, AVR, soundbar, headphones etc.); Supports any input to any output, or any 2 inputs to any output at the same time, even any 2 inputs to A and B output at the same time. 3. LOSSLESS TRANSMISSION - Active IC Circuit (not a mechanical switch) for lossless of quality and signal transmission. Support PCM Stereo 32kHz, 44.1kHz, 48kHz and 96kHz (New & Play); 4. EXTENSIVE USE - Offer solutions for noise, space and security concerns, data center control, information distribution, conference room presentation, school and corporate training environments. 5. YOU WILL GET - 1x digital optical audio matrix, 1x DC5V power adapter,1x remote control,1x user manual. If you have any question about our switcher or receive a defective item, please feel free to contact us by Oceanheartus@outlook.com