If you are talking about this video:
http://www.youtube.com/watch?v=zAPhZMfAkBE
I think this guy is recording direct and is not going through an amp. You can see his headphones... So he's not listening to an amp.
You can approximate that tone with most any quality amp by scooping out some mids and boosting lows/highs and maybe driving your preamp fairly hot.
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Peace!