ITEM NAME:YX-1979 Microphone Reverberation Module Board Electrode Supplies Components Description: YX-1979 Karaoke K Song Microphone Power Module Board Components Lin GND Rin: represents the left channel and the right channel in the audio input signal. Lout GND Rout: respectively left track ground right sound channel in the audio output signal. MIC1 MIC2: it is used to connect the microphone, and the connector of the microphone can be directly plugged in The audio output needs to be connected to the amplifier board, not directly to the stereo. Specification: Power supply voltage: AC 12V Channel type: double channel Type of adjustment: four way Audio input: 3P socket terminal Audio output: 3P socket terminal Power input: 3P terminal Size: 100x57x17mm (LxWxH) Weight: 65 g Package Includes: 1x Karaoke Power Amplifier Board Note: 1. Please understand due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3cm differences due to manual measurement..MIC1 MIC2: it is used to connect the microphone, and the connector of the microphone can be directly plugged in. YX-1979 Karaoke K Song Microphone Power Module Board Components. Lin GND Rin: represents the left channel and the right channel in the audio input signal.