Comes with a headphone output for private audio listening. of safe and reliable USB B type port, to send high-quality USB cable, without , plug and play. Enable you to output to the amplifier, an integrated sound card as a computer upgrade products, can be connected to the decoder, will be sent back to the best level of sound quality. (5.1 channel is incompatible, please set the audio output to PCM or LPCM) with both Windows XP and OS-X, For best playback in Windows. with , PS3, 360, S,which can be connected your headphones by USB DAC for playing games. HiFi Headphone Amplifier, supports headphones of high impedance 16-300ohm, signal-to-noise Greater than 100Db, + N = 0.0003%, fully filter noise, enjoy high-quality audio. Provides the easiest way to convert your PC into a hi-end music server. who have already upgraded. Once you get used to playing CDs from your computer, you'll never want to go back to a transport. Input: USB Output: coaxial/optical/3.5mm stereo/R/L System requirements for: Windows 10 Windows 8.1/8 Windows 7 Windows Vista Windows XP or above , PS3, 360, S Windows2000 Distortion: + N: 0.006% (RL Greater than 10 kΩ) : greater than equal 102db Dynamic range: greater than equal 102db Frequency Response: 16 Bit 32k, 44.1k, 48k Earphone Impedance/Output : 16ohm/281mW 32ohm/222mW 64ohm/144mW 300ohm/38mW Operating Temperature: 0℃ to 70℃ size: 10.6 x 6.6 x 2.6cm Material:ABS colour:black Package Contents: 1 x USB DAC Audio Converter 1 x USB Data Cable Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.