This Optical SPDIF/TOSLink 4x2 Matrix could put the four sets of SPDIF output signal source and two SPDIF input device connected. It can be easily split or switched between four SPDIF signal and two SPDIF signal receiving equipment. Especially support any 2 Inputs to any Output at the same time, even any 2 inputs to A and B Output at the same time. Features: 1. 4 ways of optical input split or switch to 2 sets of SPDIF receiving device; 2. Support audio format: DTS-HD/Dolby-trueHD/ LPCM2.0/DTS/Dolby-AC3/DSD; 3. Use optical fiber cable loss less the 0.2Db/m, Output distance is up to 40m; 4. Select input through remote control or by pressing the button on unit; 5. Over-voltage protection when connecting unmatched power adapter; 6. Supports last time working state memory when power off; 7. No loss of quality, plug and play; 8. Supports signal retiming. Specification: Peak wavelength: 650nm Max baud rate: 16Mbps Output cable distance: up to 40m (Use the optical fiber cable loss less the 0.2Db/m) Max working current: 100mA Power Adapter Input: AC (50HZ, 60HZ) 100V-240V Power Adapter Output: DC5V/1000mA Package Contents: 1 X Digital Optical Audio Matrix 4X2 1 X DC5V Power Adapter 1 X Remote Control 1 X User Manual