Do NOT use the volume bar status! Go into the web browser and check audio input levels. There you will see your external miclevels. Very confusing. Can't believe this is not more published!!!
Wow. So you are saying that even though the sx20 microphone level shows as disconnected, audio is passing? How can I confirm this without a second codec? I need to hook up a biamp nexia real soon. Thanks.
Darren, Have you ever gotten this to work. i am approaching a deadline and need to get some external mics/DSP integrated to the SX20. I have had mixed results with your circuit. The AT PRO45 worked while the Beyer Dynamics 33 did not... Please hel...