Audio mixer 4/7 channel GS-4/GS-7 mixer bluetooth usb sound mixer Mixer-USB Professional Mixer for live stage

4-input channel professional mixer, built-in reverberation effector, independent adjustment of reverberation parameters, built-in Bluetooth, digital display U disk player, with +48V phantom power supply required by condenser microphones, gain adjustment, three-stage equalizer, Aux Sends, Effects Sends, Pan, Distortion IndicatorTransformer Wattage: 220-240Features:♦ 4 input channels, with +48V phantom power required for condenser microphones and insertion points for external signals:♦ Each channel has gain adjustment, three-band equalizer, auxiliary channel send signal, effect send signal, pan adjustment,Distortion indication♦ 1 pre-fader aux send and 1 post-fader effect send per channel♦ 60mm high-precision and long-life push rod potentiometer, precise and delicate level adjustment♦ 6-segment stereo level indicator, accurate signal level indication♦ Built-in reverb effect, independent adjustment of reverb parameters♦ Built-in U disk player with digital display♦ Recording output interface, stereo balanced output interface♦ High-efficiency and energy-saving external switching power supply design, and completely eliminate high-frequency interference;♦High-performance monitoring headphone circuit, can be independent. Monitor each input channel, mixed output channel, effect channel♦Beautiful appearance and bright colors, suitable for all kinds of live performances and radio and television studiostechnical parameter:♦ Maximum microphone input level: +16dBu♦ Line maximum input level: +30dBu♦ Maximum input level: 19dBm (1 KHz,THD=0.5%)♦ SNR: 90dB♦ Headphone output power: 100mW (1KHz, THD=0.5%, 200 Q)♦ Equalization: Low Frequency: 80Hz±15 dB♦ IF: 2.5 KHz±15dB♦ High frequency: 12KHz ± 15 dB♦ Gain Control: Mono: ・26dB, OdB♦ Frequency Response: 20 Hz-20 KHz (+/-0.5dB)♦ Total harmonic distortion + noise: ≤0.05%♦ Power supply: AC 220V/50Hz