Product Description: This HDMI audio extractor adapter can transmit audio from ARC-enabled TV back to the adapter’s optical fiber, coaxial, 3.5mm headphone jack via the HDMI/ARC interface, and output at the same time, which perfectly solves the problem that TV having no audio output interface cannot be connected to the sound system. Features: Support fiber output. Supports coaxial output. Support RCA stereo output. Support 3.5mm stereo headphone port output. 3.5mm stereo headphone port equipped with high-performance audio amplifier. Support switch noise reduction function. Supports no signal automatic mute function. Support transmission 192KHz audio sampling rate. Optical Fiber Coaxial Interface Supports 5.1 Channel Transmission. Steps for use: 1. Connect the adapter’s HDMI port to the TV’s HDMI/ARC connector via an HDMI cable. (Note: The HDMI interface connected that does not support ARC function cannot output audio normally.) 2. Use fiber optic cable, coaxial cable or RCA cable and 3.5mm audio cable to connect to the amplifier system. 3. Finally, connect the DC head of the power adapter to the DC input of the distributor and insert the adapter plug into the power outlet. 4. Turn the adapter switch to the ON position. Product Information: Name: HDMI Audio Extractor Adapter. Model: AY80. Colour: Black. Casing Material: aluminum alloy. Power Interface: Micro USB. Maximum Operating Current: 65mAh. Power Adapter Specifications: AC 100V-240V 50/60HZ, DC 5V/1A. Working Environment Temperature:-10 to + 55 degree Casing Size: 81.5*58.5*21.5mm/3.21*2.30*0.85″(approx.). Packing List:1xAudio Extractor Adapter. 1xUSB Power Supply Cable. 1xUser Manual.