Krell FPB 600 or 400cx?

I had the FPB600 stereo amp and I drove the Magnepan 20.1 speakers with ease. Then is bought the Sound Lab Millemium one electrostatic speakers and it drove them with ease! Never any issues. Sounded spectacular. I have since then bought the Krell 650m mono blocks and wow, what can I say. If there ever was a dependable amp the FPB series is the ticket. The only thing to beware of is DO NOT plug these amps into ANY power conditioners and don't enclose them in a cabinet. Give them plenty of air and proper wall outlet amp rating. If you do this then you will get a long life from Krells.

I have owned several Krell amps and pre-amps. I love Krell performance, sound, looks and buld quality. Never had a problem. They really know how to build amps and preamps.Love their products!

I used Krell pre/power from 80s and love the excitement playing Retro/Rock n Roll/All Rounder Music ,they are aggressive sounding and squeeze your speakers making sure they sing like never before and always impress with it's dynamics.
New Krell are suppose to have improve but I am not really wooed by the built quality these days, as they are not in destructible as once thought to be.
I hope that Krell continue with the Innovation and Bring the Hi-End to No End.

I used 600c and changed to 700cx. It was a few years ago, but the cx series i find smoother and a bit darker. If using slighly bright equiptment around 600c it will prove to have a slight sting and perhaps some grain in compairson with cx.
I would go for the cx, no doubt. Even now, using Rowland Continuum, i could gladly use the 700cx or 400cx. Very nice power amps. I think you'll find the cx very nice. The only thing that i did not notice any changes in between c and cx was bass. But in the mid and treble there was obvious changes for the better. Other Krell i owned were KPS 25sc, KPS 28c and KCT.
The KPS 28c was not so much to my liking.
I would really try the cx with Classe CP-65 as i think this was a very nice pre amp.

i owed Krell FPB600 for 7years, not a single problem, enjoyed very much drive PSB Platinum T8, you could felt 20Hz, fast and very musical, i am hoping to get a mono block 600 or 650.
and upgrade to wilson Maxx2.
anyone have this combo Krell and Maxx2?
listening mostly rock/Jazz. Vinyl