Feature: 1. HDMI to HDMI audio converter, allows 2 HDMI sources to be connected to 1 HDMI display, and adds additional 3.5mm audio and spdif audio output ports. 2. Extract digital HDMI audio signal from 2 HDMI signal input to optical output and 3.5mm audio output. 3. Support HDMI switch 2 in 1 output. Support HDMI4k 30hz signal. 4. Two HDMI signal inputs can be freely switched to a display device that supports HDMI signal input. 5. Any high-definition signal source can achieve audio separation and independent output through optical fiber or left and right channels. 6. Support for HDR. Support 4K/30Hz resolution. 7. Video format supports 8bit YcbCR 4:4:4 with the highest resolution 4K/30Hz. 8. Support function, output TV return audio through optical fiber port. 9. It can realize audio synchronization and separate output. 10. SPDIF digital audio output supports for Dolby digital (AC3), and DTS supports 5 LED indicator lights. When the signal source or signal terminal is in working condition, the corresponding indicator light will turn on. Specification: Condition: 100% brand newItem type: HDMI Audio ExtractorMaterial: metalColor: As picture shownWeight: Approx. 137g Input: HDMI x 2 Output: HDMI x 1, Spdif x1, 3.5mm jack x1 Resolution: Support up to 4K 30Hz, backward compatible HDCP: HDCP1.4, backward compatible, does not support hdcp2.2 Compliant with HDMI1.4, backward compatible Support color depth: 24/30/36/48 bit Bandwidth frequency: 25MHz-225MHz Support audio format: DTS-high definitio/for Dolby-True high definition/LPCM7.1/DTS/Dolby-AC3/DSD Manual control mode, convenient operation, energy saving and environmental protection Power supply: DC5V Maximum working current: 800mA Operating temperature range: -15 to 55 ℃ Size: Approx. 90x47x19mm/3.5x1.9x0.7in. Package List: 1 x Audio Extractor1 x Power supply cable1 x Instruction