D9 exteral audio USB sound card can use with microphone, adding professional effects for singing recording, use for live broadcasting, computer gaming, Home,KTV, Stage Performance...

Frequency response 100Hz-20KHz

Signal to noise ratio >65dB

Battery 3.7V/1500mAh

Shutdown current 50μA

Charging DC5V/1A

Headphone output 320 10mW*2

Accompaniment input s600mV

Microphone input -42dB±3dB