Dual microphone support - Balanced input and output signals support dual microphones for simultaneous use, suppressing common touch interference. Stable filtering current - Multiplier filtering circuit effectively filters out AC signal interference. Soft and slow power-on function eliminates shock sound. Low pass filtering design - Built-in low pass filtering circuit fully filters out external sound device interference noise. Universalpower supply - Compatible with 99% vibrating membrane 48V condenser microphones on the market. Provides stable, balanced, and high-output power. Shielding technology - Improved shielding technology with external power supply shielding magnetic isolates AC electromagnetic waves, ensuring interference-free signal.