This SPDIF/TOSLINK Digital Optical Audio Switcher allows user to conveniently select any one of the three digital optical TOSLINK sources. It utilizes integrated circuits to perform seamless and reliable switching flawlessly without degradation. Features: 1. Three-way optical audio inputs switch to one output; No loss of quality. 2. Supports audio format: LPCM2.0/DTS/Dolby-AC3. 3. Using optical fiber cable loss of less than 0.2dB/m output distance can be up to 40m. 4. Input can be selected through remote control or button on the switch. 5. Can be placed out of sight with the included IR receiver. 6. Support signal retiming. 7. Power-off memory Over-voltage protection LED status indication. 8. Plug and play; Installs in minutes.