Features:Easy to set up, no special software, app, or driver to install, a true plug-and-play digital audio adapterWith USB, optical and coaxial S/PDIF inputs can fit with most home audio system, and RCA output can be connected to amplifier or powered speakers on your desktop; Built-in Hi-Fi headphone amp chip can drive most 16ohm to 200ohm headphones160mW RMS(32 ohms, 20 Hz - 20 KHz, 0.01% THD), with bass and treble control can be used as preamp or volume controller for your PC/MAC/ComputerMini Compact D/A converter, stream bit-perfect 24bit/192KHz HD with low jitter, with output protect circuit, safe for your expensive audio systemHighlight:Model: Q4DAC Chippest : MS8412USB Chippest: SA9023Headphone Chippest : 97220OPM Chippest: NE5532PC-USB supports input sampling rate: 96K/24BiHigh and low sound adjustment range: 6dFiber/coaxial support input sampling rate: 192K/24BiFrequency response: 20Hz-20kHz (3dBPC-USB support operating system: XP/W7/W8/W10/MAC/linuDistortion: 0.01%; SNR: 105dAmp output maximum power: 100mW 32 loaHeadphone matching impedance: 16-200Working voltage: DC5V; RCA output level: 2.3VSize (L*W*H): 73.5*98*33MM (without knobs and terminals)Package Include:*1x Fosi Audio DAC-Q4*1x 5V USB Power Supply Cable*1x PC-USB Cable*1x Optical Cable*1x Users Manual