This DJ Controller 4-channel audio mixer with dual microphones is the perfect way to mix audio from MP3, microphone and guitar connected devices. Features: Treble and bass adjustment: Select the motherboard and independently develop DSP sound effect chip to effectively solve low sounds and noise. Mono two-stage equalizer: 3 equalizers per mono channel to fine-tune speech/music at any time. VHF wireless microphone with display: high-quality sound pickup, effective reception over a long distance, and restoration of real sounds. 30m receiving distance: VHF receiving antenna, effective long-distance reception. Applicable occasions: widely used in computer recording, live karaoke, band performances, conferences and other occasions. Specifications: Plug: EU/US (optional) Material: Metal + Plastic Frequency: VHF Number of channels: 4CH Frequency response: 20Hz-20KHz+1dB/-3dB Channel equalization: 2 Three-dimensional: 4CHMIC Input impedance: 2.4K0 Output and input power Flat: +17dBU Dimensional: 4CHMIC Input Impedance: 2.4K0 Output and Input Level: +17dBU Power Consumption: 5W Effect: Reverb Mixer Size: 162*140*43mm/6.37*5.51*1.69in Microphone Size: 235* 45*33mm/9.25*1.77*1.29 inches Item weight: 911g/2.01lbs Packing weight: 1149g/2.53lbs Packing size: 32*27.5*6.5cm/12.59*10.82*2.56 Packing list: 1*Mixer 2 * Microphone 1 * Adapter 1 * Power Cord 1 * User Manual (English)