Multi-purpose mini mixer with audio interface, ideal equipment for small performance and web broadcasting. USB recording. Real-time monitoring. High-quality loop playback function makes performance and web broadcasting more convenient. Support OTG connection display, more convenient to use. Support 48V power supply (no need to configure 48V power supply additionally) to use 48V condenser microphones. Multiple volume adjustments, 16 levels of intelligent noise reduction, 16 kinds of atmosphere sound effects (customizable sound effects). Bluetooth connection. Digital screen display adjusts the volume, accurately adjusts the volume of each detail. With battery power indicator, safe and long-lasting battery life. Parameters: CORE PROCESSOR:32Bihigh-speed professional processor AUDIO SAMPLE RATE: 44.1KHz up to 48KHz/16bit BLUETOOTH VERSION: Dual-mode Bluetooth V5.0 compatible with V4.2 and V2.1 supports Bluetooth A2DP REVERB MODE: Reverb+ CURRENT CONSUMPTION: 370mA MAX419mA FREQUENCY RESPONSE: 20HZ-20KHz+3dB BATTERYTYPE: 18650 MONITORING SIGNAL-TO-NOISE RATIO: 92dB CHARGING VOLTAGE: 5V/1.5A TOTAL HARMONIC DISTORTION: Less than 0.06% BATTERY CAPACITY: 4000mAH/3.7V MONITORING IMPEDANCE: Stereo 32 Ohms CHARGING METHOD: Type-C charging HEADPHONE OUTPUT POWER: 95.7mW/32Q CHARGING CURRENT: 800mA DURATION: About 8-10 hours CHARGING TIME: About 3-5 hours Color: White Material: Metal The actual product may have color difference due to different light or display Package Contents: 1 x Sound Card 1 x USB charging cable 3 x cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.