Hi there,

I'm wanting to use the voice dictation built into the new iPad in a classroom. Due to background noise, I would think a headset with 'boom' style mic would provide better audio for the iPad to work with. 

I understand that the iPad has a 4 point or contact plug, which accepts a mono microphone input as well as audio output. 

I see two options...

Using the 3.5mm Audio Jack:
Looking at a headset along the lines of Logitech H150 - not too expensive, boom mic and no extra features that could go wrong!
These headsets require what looks like two 3.5mm inputs - something the iPad does not have.
After some googling, I found an adapter along the lines of this, which looks like it will adapt the signal from two to one plug.
This looks great, but I cannot find this type of adapter in NZ.
I have found this auction on eBay, but at $20USD + $13USD for shipping, it may be cheaper to build a cable myself? 
I have had a look around New Zealand electronics stores (CableDirect, Jaycar, etc...) but cannot find an adapter. 

Or, using the Camera Connection Kit (with a USB headset):
I have heard of using the Camera Connection Kit as a USB audio headset source - much better quality (build and mic/speaker) headsets are available with a USB plug. Interested to hear how well this works - I need a reliable, easy to use solution.

Any other ideas for microphone input or where I could get such an adapter would be appreciated!
Thanks