This DJ controller 4 channel audio mixer with dual microphone machine is the perfect way to mix audio from MP3, mic, and guitar connected devices. Features: High and Low Pitch Adjustment: Select motherboard and independently develop DSP sound effect chip to effectively solve low sound and noise. Mono Two-stage Equalizer: 3 equalizers per mono, fine tuning of voice / music at any time. VHF Wireless Microphone with Display: High quality pickup , long distance effective reception, restore real sound. 30m Receiving Distance: VHF receiving antenna, effective long distance reception. Applicable Occasions: Widely used in computer recording, live karaoke, band performance, 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: 4CH MIC Input Impedance: 2.4K0 Output and Input Level: +17dBU Three-Dimensional: 4CH MIC Input Impedance: 2.4K0 Output and Input Level: +17dBU Power Consumption: 5W Effect: REVERBERATION Mixer Size: 162 * 140 * 43mm / 6.37 * 5.51 * 1.69in Microphone Size: 235 * 45 * 33mm / 9.25 * 1.77 * 1.29in Item Weight: 911g / 2.01lb Package Weight: 1149g / 2.53lb Package Size: 32 * 27.5 * 6.5cm / 12.59 * 10.82 * 2.56in Package List: 1 * Mixer 2 * Microphone 1 * Adapter 1 * Power Cable 1 * User Manual (English)