Item Type: Live Sound Card Material: ABS Model: M3 Channel System: Dual Channel Output Sample: 44.1KHZ Sampling Resolution: 16bit Battery: 1 x 18650 3.7V 1800mAh Li Ion Battery (Built in) 1?��Professional Live Sound Card: This sound card has multi function, 6 sound modes, various sound effects, can control the unit independently.? 2?��Phantom Power Output: Supports 48V phantom power output, which can be directly connected to a phantom power microphone.? 3?��Noise Reduction: Built in dual DSP noise reduction chip processor, effectively filtering interference, blocking external noise, more delicate sound processing, and better beautiful sound effect.? 4?��Avoidance Function: Will actively block the background sound when speaking, avoid interfering with normal communication.? 5?��Bluetooth Function: Support Bluetooth connection, wireless accompaniment transmission, no longer limited by wire. 6?��LED Display Screen: With cool breathing lights, various operations of the sound card will be fed back to the LED display screen in real time, the working status is clear at a glance. 7?��Universal Use: Supports 99% of live singing software APPs on the market, compatible with most mobile phones and computers.