Item Type: 2 Channels Audio Mixer Material: Plastic,Alloy Frequency Response: 20Hz-20KHz Maximum Input Level: +10dBu Input Resistance: 18.5k Gain Range: -10dB to +40dB Package List 1 x 2 Channels Audio Mixer 1 x User Manual 1 x Power Cable Product mixer is no frequency band, interference is caused by the microphone, V segment of the microphone can not be used in the same environment more than 2 sets, U segment of the microphone can be used in the same environment more than one set, but ensure that at different frequency points, otherwise it will lead to interference. 1Stable Performance: Stable and compatible with mainstream audio software, achieving second connection, fast transmission rate, low power consumption, and more stable signal. 2High Accuracy: The USB sound mixing console is equipped with a high accuracy 16 BIT, 48KHZ audio resolution, ensuring the sound quality is as professional as ever. 3USB Power Supply: Audio mixer sound board uses USB to connect to the computer and supply power, which is more convenient to use. 4Small Portable: The USB sound mixing console has a compact structure and is easy to carry when going out. It also provides switchable 48V power supply to escort power consumption. 5Wide Application: 2 channels audio mixer is suitable for a variety of scenarios, such as music recording, home karaoke, internet karaoke, etc.