1. Decoding DTS / AC-3 source digital audio signals into analog 5.1 channel audio signals 2. The analog stereo (R / L) signal through the audio processing chip, converted to analog 5.1-channel audio signal 3. 2-way SPDIF optical input, 1 coaxial coaxial input, 1 stereo Stereo input, more complete multi-channel digital audio output to bring the switch more convenient 4. RCA output interface, easy docking docking amplifier 5. Multi-channel one-Press switch, convenient and fast, while the stereo and 5.1-channel switch Name:Digital to Analog Converter Feature :optical audio cable Feature :digital to analog audio converter Feature :toslink cable Feature :analog to digital converter Sex noise ratio: 120db Resolution: 80db (1KHZ) Response frequency: 20Hz ~ 20KHz +/- 0.5db Analog output level: 2.2V Colour:black Material:Metal Size:11 x 5 x 2.5cm Package Contents: 1 x Host Only the above package content, other products are not included. Note: Light shooting 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.