Ideal for use with audio or small audio studios. You can switch between multiple signal sources and adjust the volume for your convenience. Available signal sources: DVD, gramophone, preamplifier, CD player, set-top box, mobile phone and other audio signal sourcesEasy to install and simple to operate. High qualityHigh quality switch. Hot-swappable (no need to restart the computer). Compact and super mini size; easy to place and suitable for your desktop and office. Plug and play; no need for power supply or other software; does not affect the sound quality. Ultra-small size; compact and ultra-mini size; easy to place, suitable for your desktop and office. No need for power supply and other software, plug and play. Input and output frequency range: 20Hz~20KHz. : less than 0.002%. : 90dB. 6 in and 1 out 3.5mm headphone audio port switch. Equipped with a volume adjustment switch to adjust the output volume. Color: BlackMaterial: PlasticPackage Contents:1 x 3.5mm Stereo Audio SwitchOnly the above package contents, other products are not included. Note: Light and different monitors may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowance is +/-1-3cm.