Feature:   1. Wonderful audio-visual enjoyment: Karaoke mixer works well with 4K/2K scaler, which can convert 1080P or lower quality video to advanced 4K/2K resolution, bringing you a completely different audio-visual experience; 2. Music Volume Adjustment: Karaoke HDMI-compatible Mixer supports mixing audio from 2 different microphones and allows to adjust music volume, echo volume and individual microphone volume. At the same time, provide you with excellent stereo audio quality; 3. Smart and Moderate Controller: To make the HDMI-compatible mixer work simultaneously with Android TV, set-top box, select computer to control song selection or other operations, as well as streaming or playing video or music; 4. Compatible with multiple devices: Compatible with multiple devices, such as Android TV boxes, Android set-top boxes, DVD players, HDMI-compatible dongles, laptops, computers, etc..      Description: Name: Karaoke Mixer Model: KM200 Material: metal Color: Black Optional plug: EU plug, US plug (optional) Item size: 16.1 x 10.2 x 2.1 cm/6.34 x 4.02 x 0.83 inches (L x W x H) Item weight: about 409g/14.43oz Package size: 20.2 x 14.3 x 7.3 cm/7.95 x 5.63 x 2.87 inches (L x W x H) Package weight: 651.5g/22.98oz Front panel: 2 x MIC line input, 1 x MIC 1 volume adjustment, 1 x MIC 2 volume adjustment, 1 x master-volume adjustment, 1 times echo volume adjustment, 1 headphone socket Rear panel: 1 x 12V DC, 1 x AV input, 1 x AV output, 1 x HDMI-compatible output, 1 x HDMI-compatible input, 2 x audio output, 2 x audio input      Packing list: 1 x Karaoke mixer 1 x HDMI-compatible cable 1 x RCA cable 1 x Power plug 1 x User manual 1 x Packing box