Features: 2 microphone inputs, video input and sound output of video Echo effect and 2 microphone control With stable quality, portable, beautiful and compact features. Suitable for companies, stages, homes, KTV rooms, etc. Connect the front end of the amplifier to the input and control the host power supply. Description: Dual microphone input, video input and sound output of video the volume can be adjusted separately. Reverberation delay function and audio input/output for left/right channel volume frequency adjustment. Volume frequency adjustment. Specifications: Power supply: adapter 110-240V Plug specification: US Working voltage: 9V-12V Total harmonic distortion: <0.5% @ 1KHz Color: black Item size: 14 * 8.5 * 4cm Packaging size: 20 * 17 * 7cm Package includes: 1 Karaoke echo mixer 1 x power adapter US plug 1 set of audio cable 1 set of video cable