Krell FPB 600 or 400cx?


I own Revel Ultima Salon 2s and am looking to upgrade my amp for better performance in the low end. Right now I'm just not getting any real punch or slam in the bass dept, and I know the Salons are capable of much more. I have the opportunity to go with a fpb 600 or the 400cx for around the same price. Any thoughts? Is the extra 200 watts of power on the 600 worth losing any sonic benefits of cx? Or is the cx so superior sonically that there's no comparison?

Thanks.

Josh
punishen1
Why do you think the 400cx is that much better than the FPB 600? Anyway I am sure that the 400 watts is enough to drive the Revels with oomph and bass, especially if you have the preconcieved notion that the Cx is a superior amp. What are you using now?
I owned a 400cx for about 5 years and It is a great amp. I am assuming the 600 you are comparing it to is an older model before the C . if so i would go with the newer model.
Martin Colloms tested both of them; the 400cx got 75 on his scale, the FPB 600 got 45. See the HIFICRITIC site for more.
The 600c is better. As a matter of fact the 600 beat my 350c monos and I got rid of the monos and purchased a 600. I now have a 700cx.