Features: 1. 4 ways of optical fiber signal input split or switch to two sets of SPDIF signal receiving device. 2. Audio format support : DTS-HD/trueHD/LPCM2.0/DTS/-AC3/DSD 3. Support signal retiming 4. Used optical fiber cable loss less the 0.2Db/m, Output distance is up to 40m. 5. The input control can through R/M and also can directly press the button. 6. Support last time working state memory when power off. 7. Over-voltage protection can prevent the damage caused by connecting unmatched power adapter to the machine, if the light for standby indication flashed, it shows that the output voltage from the power adaptor is too high and the adaptor needs to be changed. 8. LED status indication, it can tell us the working state of the device very easily. 9. No loss of quality 10. Installs in minutes 11. Need DC5V/1A power supply Specifications: Support audio format: DTS-HD/LPCM2.0/DTS/Dolby-AC3/DSD Highest wavelength: 650nm Max baud rate: 16Mbps Output cable distance: 40mUse the optical fiber cable loss less the 0.2Db/m Max working current: 100mA Power adapter format: Input:AC 50HZ, 60HZ 100V-240V; Output: DC5V/500mA Operating Temperature range: 0 to 40degree Operating Humidity range: 5 to 90RH No Condensation Dimension L x W x H: 68x128x34 mm Weight:185g Package List: 1 x Audio Matrix 1 x power 1 x remote controller