USB external sound card set live karaoke equipment, mobile computer, internet celebrity anchor, recording live singing artifact Microphone type: condenser Dimensions: 12*11*4 Display: None Wireless: Yes Pointing characteristics: omni-directional/no-pointing Channel: 2.1 Input voltage: Other With or without bracket: None Bluetooth protocol: None Bluetooth version: None Shell craft: metal Built-in battery: capacity without battery Battery life: more than 12 hours Signal to noise ratio: 70db Frequency response range: 100HZ-20KHZ Product description: 1: USB audio interface, used to record microphones and musical instruments. Transmit 2 inputs/2 outputs to your computer with ultra-low latency, 2: Professional audio quality. Maximum sampling rate: 48 kHz 16BIT 3: Support 48V capacitor MIC, gain greater than 23DB, maximum support 2VRms signal input 4: Compatible with popular recording software, including Avid pro tools, Ableton live, Steinberg Cubase, etc. 5: The system supports Windos XP~Windos 10, Android 6.0~12, IOS system. Please add OTG adapter cable when using mobile phone or mobile device Troubleshooting: 1. Nothing happens when connected to the computer Method, check the computer USB port problem, change a USB port, or change a USB cable. 2. Connect the mobile phone. Method, the mobile phone is equipped with an OTG cable with an OTG to USB-A connector, and the sound card can be directly connected to it. If it doesn't work, it may be that the power supply of the mobile phone is insufficient. You can add a USB extender and use an external power supply to supply power to the sound card. Wire connection: Connect the USB extender to the power supply, plug the mobile phone OTG cable into the USB extender, and then plug the sound card into the USB extender. 3. The input has a large hum noise Method to eliminate possible strong interference sources nearby. Or the quality of the recording cable is not good, you can shorten the cable, or use a shielded cable. It may also be that the mains ground wire of the computer is not properly connected 4. There is a large noise in the output, which may be caused by poor mains grounding of the equipment, or insufficient power supply, try a USB cable, or connect a ground wire 5. This product does not support ASIO, if necessary, please download ASIO Link Pro (virtual ASIO plug-in) and solve it by yourself