Features: 1.Equipped with a optical fiber input interface and a coaxial input interface, promises higher efficiency. 2.Can be connected to the power amplifier system of DVD, High Definiton, etc., through RCA output interface. 3.Eliminate noise when there is no input signal, and automatically mute it when a non?audio signal is input. 4.Supports 192kHz 24bit sampling rate, also supports easy volume adjustment and bass adjustment. 5.The metal shell works perfectly in resisting the interference, ensuring more stable output. 6.The 3.5mm audio output interface on one channel supports connection to headphones. specification:Item Type: Digital to Analog Audio Converter Support Audio Format: PCM Resolution (1KHz): 94DB Response Frequency: 20Hz-20KHz-0.2db Signal-to-Noise Ratio (SNR): -100db Total Harmonic Distortion (THD + N): 10Hz-20KHz 0.25 -0.065% Blocking Time: 0.57Fs Sampling Rate: 32-192KHz Bit Rate: 16-24 Bit Output Electrical Level: 7V Headphone Output Power: (RL-322) 30mW Output Impedance: 47 Ohm Working Voltage: +5v Maximum Voltage: 6v Maximum Power Consumption: 100mA Operating Temperature Range: 10-70 Storage Temperature Range: -60-150 Working Humidity Range: 10%-80%RH (non-condensing) Storage Humidity Range: 5-90%RH (non-condensing) PackageList: 1 x Digital to Analog Audio Converter 1 x User Manual 1 x Charging Cable 1 x Optical Fiber Cable