1、BLUETOOTH USB MP3 PLAYBACK: Professional sound mixer can play music via Bluetooth or USB connection, making it easy for users to select different sources of sound for mixing. 2、BUILT IN DPS SOUND CONTROLLER: 4 channel sound mixer is equipped with a digital display built in DPS sound controller that allows users to intuitively adjust sound effects to enhance the quality and realism of the sound. 3、4 CHANNELS: 4 channel mixer features 4 channels and 4 microphone jacks. It is suitable for a variety of scenarios that require mixing, such as band performances, recording studios and so on. 4、HIGH, MEDIUM AND LOW EQUALIZER: Bluetooth mixer comes with a high, medium and low band equalizer, which allows users to adjust the volume and sound quality of different frequency bands as needed for more ideal sound effects. 5、APPLICABLE SCENE: Professional sound board can be used for wedding hosts, stage performances, live broadcasts, KTV rooms, home karaoke and other occasion. Item Type: Professional Sound Mixer Material: ABS, Iron Number Of Channels: 4 Number Of Microphones: 4 Equalizer: High Middle And Low Adjustment 1 x Professional Sound Mixer 1 x Instruction Manual 1 x Power Adapter