CM6533 mic input UGREEN USB soundcard.
Mono to stereo mod. Working on Android smartphone.
CM6533 UGREEN 72E17 251-V0
C24
C25
C34
R27
R28
L11
Microphone input impedance 20~45 k ohm
Output impedance microphone bias 650 ohm
Headphone output impedance 32 ohm
