nullFeatures- Fits bluetooth function- USB plug and play- Lightweight and portable- Each mono with 3-band equalization- 6 kinds of music modesSpecificationsMaximum input level of the microphone: +24dBuLine maximum input level: +24dBuMaximum output level: XLR card + 26dBuMain level meter: 10-segment LED, -24dB to CLIPFrequency response: 20Hz-30Khz±0.5dBMaximum power input power: 15WTotal chopping distortion (RHD+N): 0.01%Crosstalk (1kHz): fader off 85dB channel 82dBNoise (22Hz-22KHz): Equivalent input noise -122dBu Remaining output noise -90dBuMono/stereo channel EQ: high frequency +/-15dB, 12KHz low frequency +/-15dB, 80KHz high IF +/-15dB, 2.5KHz2-track return: RCA lotus seat, unbalanced, 4K ohm, -2dBu2-track transmission: RCA lotus seat, unbalanced, 75 ohm, -2dBuL/R output: XLR, balanced, tip hot end, 75 ohm, +4dBu, max +22dBuFX/AUX output: TRS, unbalanced, tip hot end, 75 ohm, -2dBu, max +18dBuHeadphones: TRS, Tip L, Ring R, Recommended 30 to 600 ohm headphonesSize: 635mm*340mm*37mmPackage includes1x Professional mixer