LiNKFOR 4 Port 3.5mm Stereo Audio Switcher

    Selector(A/B/C/D) Designed for Customers Having Several Audio Sources and Outputs. Volume Control Knob Can’t use it as a audio amplifier, it can’t be able to amplify your original source volume. Non-slip Pads You won‘t worry about slipping when using LiNKFOR 3.mm audio switcher. Plug and Play No Power supply and other software required.     FQA   No sound?     Please check whether the audio cable is plugged in and replace it with another audio cable. Please check that your device is in silent mode.     The voice is too small or the quality is poor?     You can’t use it as a audio amplifier, it can’t be able to amplify your original source volume and change your audio quality. When begin to using our audio switcher, all mobile phones, computers and notebooks and so on original source volume will be adjusted to protect your ears mode automatically. You can adjust our original source volume according to your need.     Can I use with a headset that has a microphone, receiving signal from my phone and my computer?     You could use it to hear the audio coming from either your computer or your phone. However, you can’t use it to send the microphone from your headset back to your computer or phone. The Product is only suitable for TRS connection, NOT support TRS microphone connection.