Comes with a headphone output for private audio listening. Features a reliable USB B type port for high-quality audio transmission, plug and play without external power. Enables output to an amplifier, functions as an integrated sound card for computer audio upgrade, and can be connected to a decoder to deliver high-quality sound performance. (5.1 channel is incompatible; please set the audio output to PCM or LPCM). Compatible with Windows XP and OS-X. Optimized for Windows playback. Compatible with devices that support USB audio, including certain gaming consoles and PCs. Allows connection of headphones via USB DAC for gaming and multimedia use. HiFi headphone amplifier supports a wide range of headphones with impedance from 16 to 300 ohms. Signal-to-noise ratio: 100dB. Low total harmonic distortion (THD) of 0.0003%, effectively reduces noise for clear, high-fidelity audio. Provides an easy way to turn your PC into a high-performance music server. Experience improved audio quality when playing digital music files. Once used to digital audio playback, the upgrade is noticeable. Input: USB Output: Coaxial / Optical / 3.5mm stereo / R/L RCA System requirements: - Windows 10 - Windows 8.1 / 8 - Windows 7 - Windows Vista - Windows XP - Windows 2000 - macOS THD + N: 0.006% (load 10 k) Signal-to-noise ratio: 102 dB Dynamic range: 102 dB Frequency response: 16-bit, 32kHz, 44.1kHz, 48kHz Headphone impedance and output power: - 16 / 281mW - 32 / 222mW - 64 / 144mW - 300 / 38mW Operating temperature: 0C to 70C Dimensions: 10.6 x 6.6 x 2.6 cm Material: ABS Color: Black Package Contents: 1 x USB DAC Audio Converter 1 x USB Data Cable Note: The package includes only the items listed above. Other accessories are not included. Due to lighting and display differences, the actual product color may vary slightly from the image. Measurement tolerance: 13 cm.