Function: When the microphone detects speech, it lowers the volume of background music. It automatically returns to normal when the speaking stops. Microphone Input Interfaces 6.35mm: Suitable for dynamic microphones, conference gooseneck condenser microphones, etc. Microphone Input Interfaces 3.5mm: Supports three-pole plugs, with built-in bias suitable for 5V condenser microphones, electret capsules, etc. Due to the wide variety of condenser microphones and different plug combinations, please be careful to distinguish. Audio Input: RCA interface Output: RCA interface Power Consumption: 0.25W Power Supply: DC12V-24V; please use a high-quality, low-ripple power adapter for power supply. Microphone Amplification Gain: 36dB Microphone Input Impedance: 2KΩ Audio Input Gain: 0dB Audio Input Impedance: 50KΩ Output Impedance: 600Ω Explanation of the Three Adjustable Resistors' Functions ④ Sensitivity: The minimum microphone volume required to trigger the ducking effect. ⑤ Recovery Time: The time it takes for the background music to return to its normal playback volume after the microphone stops receiving input. ⑥ Depth: The degree to which the background music volume is reduced when the ducking effect activates (i.e., when the microphone is in use). This can range from complete muting of the background music to retaining a moderate level of it. Color: Green Material: PCB+Components Package Contents: 1*Microphone lower volume of background music