Feature: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.Specification:Item Type: Professional Sound MixerMaterial: ABS, IronNumber Of Channels: 4Number Of Microphones: 4Equalizer: High Middle And Low AdjustmentVoltage: 100-240V.Package List:1 xProfessional Sound Mixer1 x Instruction Manual1 x Power Adapter