Optical Audio Splitter 1x4: One ways of optical fiber signal input splitter to Four sets of SPDIF/TosLink signal receiving device Support Audio Format:Support Digital LPCM2.0/DTS/DOlby-AC3 ,32kHz, 44.1kHz, 48kHz, 96kHz and 192kHz.Not support 7.1CH Dolby Digital Plus,Dolby TrueHD,because 7.1CH audio cannot be transmitted via fiber optic cable and must be transmitted over HDMI cable Long distance signal transmission:Used optical fiber cable loss less the 0.2Db/m, Output distance is up to 40m/130ft Voltage Protection:Over-voltage protection can prevent the damage caused by connecting unmatched power adapter to the machineVoltage Protection:Over-voltage protection can prevent the damage caused by connecting unmatched power adapter to the machine High-grade Aluminum Alloy Design:Overall Shielding without Signal Interference, Ensure high-quality audio signal to send