I have several of Britt's profiles and they are some of the best I have tried. His clean sounds in particular are great.
I have noticed on many of his profiles it sounds like he added a touch of short reverb like a room sound or something.
I think it helps your sound cut through a bit in a live situation but perhaps that is giving you a sensation of distance?
I am playing live through a Xitone Michael Britt powered cab and I usually play a tele with P90's on his profiles.
I think he creates a lot of them using P90's in a Tom Anderson or Suhr guitar.
Actually he is very responsive to correspondence on Facebook, he has answered several questions for me in the past.