J-Tech Digital (registered US trademark) proudly introduces this latest generation SPDIF/ TOSLINK Digital Optical Audio 4x2 Matrix: 4 Inputs 2 outputs. Support 5.1 channels output up 130 ft. Features: · 4 Inputs / 2 Outputs for Optical / SPDIF / TOSLink Audio; A True Matrix for Any Input to Any Output: The two outputs can be the same sharing the same input or be different from two different inputs. · Support Dolby Digital & DTS 5.1, Dolby Digital Plus; Support PCM Stereo 32kHz, 44.1kHz, 48kHz and 96kHz; plug & play · Support signal retiming · Used optical fiber cable loss less the 0.2Db/m, Output distance is up to 130 ft. · Input and output can be selected through remote control or button on the switch · Over-voltage protection can prevent the damage caused by connecting unmatched power adapter to the machine · No loss of quality