Hi Dearing,
I started to reply but then deleated my post and scalled it down dramatically. This isn't a CAT amp vs VAC thread so if you would like to know more PM me and I'll reply but that being said I did notice a thread you replied to in relation to CAT amps on 10-09-06 and I agree you were spot on when you said.
10-09-06: Dearing
they are extremely finnicky because of their hot-rod design. They require constant monitoring of bias settings and blow tubes easily, which requires new resistors to be soldered in. Don't buy one unless you know how to use a solder iron, have a lot of patience and have a lot of money for new output tubes.
Dearing, you are so correct and then some, once I got most of the on going issues sorted out the CAT's in the end just could not properly fill my room with sound while paired up with my MBL's.
Now if anyone reading this is thinking of comparing these CAT's to these VAC 450's all I can say is good luck and that will be just too funny because in the end there just isn't anything to compare periode.
Good luck and enjoy!