1. Decoding DTS / AC-3 source digital audio signals into analog 5.1 channel audio signals2. The analog stereo (R / L) signal through the audio processing chip, converted to analog 5.1-channel audio signal3. 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 convenient4. RCA output interface, easy docking docking amplifier5. Multi-channel one-Press switch, convenient and fast, while the stereo and 5.1-channel switchName:Digital to Analog ConverterFeature :optical audio cableFeature :digital to analog audio converterFeature :toslink cableFeature :analog to digital converterSex noise ratio: 120dbResolution: 80db (1KHZ)Response frequency: 20Hz ~ 20KHz +/- 0.5dbAnalog output level: 2.2VColour:blackMaterial:MetalSize:11 x 5 x 2.5cmPackage Contents:1 x 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.