Sound Qualitythe live sound cards sound quality is clearer and more stable, ensuring a sense of depth and space between the extension and the voice, making the sound during the live broadcast more mellow and three-dimensional. Bluetooth Wireless Accompanimentthe soundcard supports Bluetooth 5.0, independent Bluetooth switch key, open the Bluetooth key independently, less than or equal to 5m high fidelity reception, 10m effective distance. Noise Reductionone-click noise reduction to improve sound quality, raise your voice to the another level. DSP ChipPickup DSP chip digital signal processor, digital signal calculates human voice, accompaniment and sound effect through multi-channel calculation. Rechargeable BatteryThe live sound o mixer built-in 1800mAh batterywhen the battery is less than 20%, switch the red light to prompt, the switch flashes when charging.