1、Adopt high‑performance for LINUX operating system and audio decoder chip, support DTS/AC‑3, 2 SPDIF optical inputs, 1 Coaxial input, 1 Stereo input. 2、AUX input interface, connected to any set of LPCM stereo signals (such as computer audio, MP3/MP4 player audio), automatically recognize AC‑3 DTS LPCM digital audio signal. 3、High compatibility, support for network players, high‑definition TV, for Blue‑ray DVD, DVD, for PS3, for Xbox 360/DM500S/DM800HD and other devices. 4、Small in size, made of high quality metal material as shell, with strong anti‑interference performance, one‑key switching of 1‑channel/1‑channel output, convenient and fast . 5、Support for U disk playback, and automatically recognizes U disk playback (U disks that do not support for exFAT file system). 1 x Digital Audio Decoder1 x AC Plug1 x Manual Item Type: Digital Audio DecoderMaterial: MetalColor: As Picture ShownSize: Approx. 105x75x25mm/ 4.1x 3.0x 1.0inWeight: Approx. 295.0g/ 10.4ozSupport Audio Formats: MP3, AC3, DTS, WAV, WMA, AAC, FLAC, APE, OGG, M4A, M3U8Signal to Noise Ratio: 120dbResolution: 80db (1KHZ)Channel Imbalance: 0dbSampling Rate: 32~192 KHzBit Rate: 16~24 BitResponse Frequency: 20Hz~20KHz +/- 0.7dbTotal Harmonic Distortion (THD): 20Hz~20KHz 0.25- 0.065%Total Harmonic Distortion + Noise (THD) + N): 1KHz 0.15%Analog Output Level: 2.2VAnalog Input Level: 1V (3db)Interface: Optical Interface x 2, Coaxial Interface x 1, Headphone Input x 1, Headphone Output x 3, USB Interface x 1Power Adapter Input: 100V-240V (50-60Hz) Output: 5V/1AMaximum Working Current: 400mAWorking Temperature/Humidity: 0-70℃/10%-80%RH (no Condensation)Storage Temperature/Humidity: -10-80℃/ 5% -90% RH (no Condensation)Connection and Operation: 1. Use 3.5mm audio line to connect FL/FR SL/SR CEN/SW interface with audio amplifier (such as power amplifier). 2. Use optical fiber cable or coaxial cable or 3.5mm audio cable to connect to optical fiber interface or coaxial interface or Aux interface, the other end of optical fiber cable or coaxial cable or 3.5mm audio cable and audio playback device Connection (such as: CD, DVD player, game console, computer and other audio playback equipment). 3. When using the U disk playback function, connect the U disk to the USB port of the decoder. 4. Use the +5V/DC005 connector power cord to connect to the power input interface of the decoder. After the power is connected, the Power indicator will light up. Wait for the default USB mode after the boot is completed. 5. When you need to switch input channels, press the Input button continuously to switch input channels in turn. 6. When you need to switch between 2.1 and 5.1 channel output, press the 2.1/ 5.1 button continuously. When the output is 2.1 channel output mode, only the FL/FR interface has sound.