Support HDMI-Compatible ARC, optical fiber, coaxial input switching function Support optical, coaxial, RCA stereo, 3.5mm stereo headphone audio output at the same time. 3.5mm stereo headphone port equipped with high-performance audio amplifier Support transmission of 192KHz audio sampling rate Optical fiber coaxial interface supports 5.1 channel transmission(Signal pass-through) Notes: 1. The RCA Cable not including 2. Please select the link of model if your hdmi port mark with ARC. This HDMI-Compatible audio return & DAC audio converter can return the sound of a TV that supports ARC function to the adapter's ARC loop output interface, optical fiber,Coaxial, and 3.5mm headphone jack output through the HDMI-Compatible/ARC interface. It also supports optical digital The audio signal is converted into a stereo analog signal, and it can support optical fiber and ARC output at the same time, which perfectly solves the interface compatibility problem between the TV and the audio system.This product is very suitable for home theaters, teaching, training structures, conference rooms, home appliance stores and other places. Support optical fiber or ARC input, optical fiber, ARC output (signal pass-through) ARC,RCA and 3.5mm headphone output volume can be controlled by TV (CEC) Support volume memory Power Supply Interface:DC5.5 Maximum operating current:200mA Working environment temperature:-10℃-+55℃ Storage temperature:-20℃-+60℃ Operating Humidity:10-90%RH(non-condensing) Storage humidity:5-95%RH(non-condensing) Weight:92g Colour:Black Material:Metal Size:Case Size:90x73x21(mm) Package Contents: 1 * ARC Audio Extractor 1 * USB Cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.