Currently Being ModeratedMar 16, 2012 5:32 PM (in response to N_Peters)
The HDMI AV adapter includes both the AV connection and a second iPad connector for additional connections.
I think you will find that most modern headset microphones are of reasonable quality. In addition to the 3.5mm port, you may also be able to use a Bluetooth headset.
Currently Being ModeratedMar 16, 2012 7:53 PM (in response to N_Peters)
For an adapter to allow for an XLR mic to connect to an iPad check out KVConnection
They have many types of adapter that allow for all kinds of mics. I have their adapter that allows my iPad to input the RCA TAPE OUT from a soundboard, for example, and it works great! I also have one that lets me plug in a 3.5mm mic and a pair of headphones.