Wow.. Got my TD a few days ago and just had time now to train it in. I used a Rode NT1 mic in the "down under" position and it sounds fantastic. It did need some eq, but still the best sound I've ever heard direct. If someone played me the below recording, I'd recognize it as my Martin J15, and assume it was recorded with a mic.
Here's a clip of me strumming away, recorded direct out of the TD:
https://soundcloud.com/user-64349494...in-j15/s-If3Fd
This weekend I'll try it in my duo gig.