Features 1.Sound Extraction: HD output ARC sound can extract sound from high definition multimedia interface signals to digital and analog signals. 2.Input And Output: ARC Sound Extractor Supports high definition multimedia interface ARC, optical, coaxial input switching function; Supports optical, coaxial, RCA stereo, 3.5mm stereo headphone output simultaneously. 3.Volume Adjustable: ARC sound extractor switches to ARC and 3.5mm headphone output, volume level can be controlled by TV (CEC). 4.Transmission: Digital analog sound converter optical coaxial output interface supports 5.1 channel transmission, and supports transmission of 192KHz sound sampling rate. 5.Easy To Carry: Digital analog sound converter is aluminum metal case, small size, easy to carry, suitable for a variety of scenarios. specificationItem Type: ARC Sound Extractor Material: Aluminium Alloy Power Supply Interface: Micro USB Maximum Working Current: 100mA Operating Ambient Temperature: -10-+55 Storage Temperature: -20-+60 Working Humidity: 10-90 Percent RHNon Condensing) Storage Humidity: 5-95 Percent RHNon Condensing) Size: Approx. 90x73x21mm/3.5x2.9x0.8in PackageList 1 x Sound Converter 1 x Charging Cable 1 x Instruction Manual NoteManual measurement, please allow slight error.