Feature:1. Stable Performance: Stable and compatible with mainstream audio software, achieving second connection, fast transmission rate, low power consumption, and more stable signal.Specification:Item Type: 2 Channels Audio MixerMaterial: Plastic,AlloyFrequency Response: 20Hz-20KHzMaximum Input Level: +10dBuInput Resistance: 18.5kGain Range: -10dB to +40dB.Package List:1 x 2 Channels Audio Mixer1 x User Manual1 x Power CableNote: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.