Hi Lecram, I took a peek at the Bryston 28B sst2 mono blocks, the noise floor is right below 115db, and the transformers for the power supply is a mere 2,000 kva in each amp, the stock form krell 700cx has two 4,000 kva transformers in the power supply that is a total of 8,000 kva, and the stock form noise floor to the 700cx is 120db, so no, I do not believe spending nearly $20,000.00 on these amp's are worth it period, really, your 700cx will out perform most amp's in the $20,000.00 class range anyway,The 700cx is class A, and the Bryston is class a/b, also, the bryston does 1,000 watts, the 700 cx will do 1,800 watts a channel to your speakers on a 2ohm load, krell did us all a favor on the original price for the 700cx, a bargain for real, they could have got alot more money for these amp's compaired to what is available today.