I have to say I was a bit disappointed to find that the author "built" the amp by assembling evaluation boards in a case with a power supply. $500+ is allot of

I have to say I was a bit disappointed to find that the author "built" the amp by assembling evaluation boards in a case with a power supply. $500+ is allot of money to pay to "do-it-yourself" when amps like the T-Amp produce similar power output and are available for 1/10th the cost.