2 way digital optical audio switch to connect two digital optical toslink sources to a single optical tos link spdif input on your hd tv av amplifier hi fi or home cinema system supports cables distances of up to 5m in for each input and 5m out input ports 2 x tos link optical fibre output port 1 x tos link optical fibre supports uncompressed 2 channel lpcm linear pulse code modulation digital audio signal output supports compressed 2 channel and multi channel dolby and dts audio