【Optical Coaxial Digital Audio Extender】---: Digital Audio Extender Extends Optical or Coaxial Audio Signals to Devices Up to 150m/500ft Away Via Cat5e/6 Cables. Resolves Distant Audio Device Connections, Offering Flexible Cabling and Installation Options 【150m/500ft Transmission Distance】---: Audio Extender Via Point-To-Point Configuration, Can Extend Your Optical or Coaxial Audio Signal Up to 150m/500ft, Ideal for Large Residential or Commercial Spaces Requiring Long-Distance Audio Signal Transmission 【Support Dolby 5.1 DTS-HD PCM】---:The Ethernet Extender Supports Digital Audio in Dolby Digital, DTS 5.1, DTS-HD and PCM. Sampling Rates Up to 96khz, Experience Impressive Surround Sound From Both Stereo And Multi-Channel Audio Formats 【Professional Audio Quality】---: Optical Extender Built-in Surge Suppressor to Protect Audio Equipment From Damage Caused by Peak Voltage, Can Transmits Uncompressed Lossless PCM Audio or Compressed 5.1/7.1 Surround Sound Over a Cat5e/6 Cable 【Easy to Use】---: The Extender Transmitter Input Has an Optical Coaxial Switch Dip Key to Select Optical or Coaxial Input. The Receiver Powered By Ethernet Cable, Easy to Use with Only the Transmitter Connected to a Power Source