1、Mix the Pretty Music: This stereo audio mixer can mix and arrange the input signal and produce pretty melodies, which will better improve playing. 2、4 Input and 1 Output: With 1 main output volume knob and 4 independent input volume knobs, no interference between the inputs of the four channels. 3、Better Compatibility: The audio mixer can mix signals from CD players, musical instruments, portable recording devices, video playback devices, etc. 4、Great Passive Design: Passive circuit design does not increase or decrease audio signals and can operate without batteries or external power sources. 5、Convenient Carrying: Designed to have a light weight and a compact size, the 4 channel audio mixer is very convenient to carry for indoor and outdoor. 1 x Audio Mixer1 x Data Cable1 x Adapter1 x User Manual Item Type: Audio MixerProduct Material: MetalPlug: 100-240V