I ran into a problem with UM400 where stream volume was very low when using audio input, almost like there was no audio input.The built in microphone was also active while external audio source was plugged into audio input. Audio input has worked flawlessly until this experience.
Does the microphone operate as default audio?
When audio input is being used does UM400 automatically turn off the microphone?
Suggestions? (other than verifying audio source)