1. Decodes digital audio signals from DTS/AC-3 to analog 5.1-channel audio signals. 2. The analog stereo signal (R/L) is converted to an analog 5.1-channel audio signal via the audio processing chip. 3. 2-way SPDIF optical input, 1 coaxial input, 1 stereo input, more complete multi-channel digital audio output for more convenient switching. 4. RCA output interface, easy docking with amplifiers. 5. Multi-channel one-button switch, convenient and fast, while switching between stereo and 5.1 channels. Name: Digital to Analog Converter Function: optical audio cable Function: digital to analog audio converter Function: toslink cable Function: analog to digital converter Signal-to-Noise Ratio: 120db Resolution: 80db (1KHZ) Frequency Response: 20Hz~20KHz +/- 0.5db Analog Output Level: 2.2V Color: Black Material: Metal Size: 11 x 5 x 2.5cm Package Contents: 1 x Digital to Analog Converter (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 to differ slightly from the real thing. The allowable measurement error is +/- 1-3 cm.