Anybody heard of this company before?

http://www.conceptarchery.com/

I have been following this guy' s threads over on www.archerytalk.com. His written details and his website information has a little left to be desired, they seem to be somewhat incomplete and confusing. However, from what I can compile, he is claiming he has a 300+ fps bow, Concept 99, with 99% let-off. Don' t quote me but it something to this effect, he claims the let-off doesn' t come from a module on the cam, rather notches in the axel, so the amount let-off does not effect the speed of the bow.