This HD51-A Digital Audio Decoder is used 24-bit audio DSP, 96KHz digital receivers, and 192KHz/24bit ADC and DAC. Support Dolby Digital AC-3 Dolby Pro Logic, DTS, PCM and other digital audio format source decode, a variety of sound field and the replay results of two listening modes, 5.1 analog audio output, will auto work with different amplifier and speakers to get different sound effects, easy to connect many entertainment devices which with optical and coaxial digital signal and analog output signals (such as: set-top boxes, HD players, Blu-ray DVD, PS2, PS3, XBOX360)Convert DTS/AC3 source digital audio to analog 5.1 audio or stereo audio output The analog stereo (L/R) signals convert to analog 5.1 channel output Multi-channel audio input (SPDIF , Coaxial, Stereo):2 x SPDIF input, 1 x Coaxial Input, 1 x Stereo Analog 5.1-channel(3x3.5mm) or Stereo outputPackage Contents: 1 x Digital Audio Decoder 1 x AC Adapter 1 x Optical Cable 1 x User ManualSpecifications: Signal to Noise: 120db Degree of Separation: 85db Frequency Response: (20Hz ~ 20KHz) +/- 0.5db Max Output Volt: 2.2V Power Supply: DC/9V 1A(outlay 110V~240V broadband convert DC9V Power) Product Dimension: 105 x 75 x 25mm Color: Black