The DAC-51 Digital to Analog Audio Decoder uses 24-bit audio DSP and 192KHz DACs to convert virtually any type of digital audio input to stereo output. It supports uncompressed two-channel PCM as well as compressed multi-channel bit-stream audio (Dolby Digital AC-3 Dolby Pro Logic, DTS) and provides two channels of analog outputs both on RCA as well as 3.5mm headphone jack. When the input is multi-channel, the device down-mixes (using downmixing or fold-down algorithm) the digital channels to 2-channel stereo for easy connection to entertainment devices. Both TOSLINK optical, coaxial digital SPDIF inputs are provided (switch selectable by the user). Package Contents: Universal Digital to Analog Audio Decoder DSP Power Supply Product Type: Digital-to-analog Audio Converter Product Type: Digital-to-analog Audio Converter Manufacturer Part Number: DAC-51 Packaged Quantity: 1 Signal to Noise Ratio (SNR): 120 dB Limited Warranty: 3 Year Weight (Approximate): 1.41 oz Color: Black Color: Black Manufacturer: Hall Research Product Model: DAC-51 Product Name: Universal Digital to Analog Audio Decoder DSP Brand Name: Hall Research Brand Name: Hall Research Height: 3 Width: 2.2 Depth: 0.8 Headphone: Yes Number of Digital Coaxial Inputs: 1 Number of Digital Audio Optical Input: 1 S/PDIF In: Yes Maximum Frequency Response: 20 kHz Headphone: Yes Number of Digital Coaxial Inputs: 1 Number of Digital Audio Optical Input: 1 S/PDIF In: Yes Maximum Sampling Rate: 192 kHz Maximum Bit Depth: 24-bit