I am new to audio design so please bear with me.......... We need to interface the TLV320AIC1110 to a David Clark headset which uses a dynamic microphone. The mic impedance is in the 5 ohm range. I have experimented with an existing circuit that provides a small amount of amplification (4x) but we find that we need to have all of the gain settings as well as the additional stages of amp within the codec enabled to have a reasonable voice level. When I try to add additional external amplification, things go downhill.
The audio output will also need to be amplified, but we can cross that bridge after we get the mic working well.
Tom