Amp for Nautilus 801

I currently own the B&W 801's and am driving them with Bryston 7Bsst monoblock amps and used along with a CAT Ultimate MKII pre. The 801's are a demanding speaker and can handle alot of power. I can only speak for the Bryston's and can say that they effortlessly feed these speakers. They are rock solid on the bottom end, Mids are precise and Hi's are detailed and not overwhelming. They are quiet running and when put to the test, these 600w amps can produce some heat. The warranty from Bryston is one of the best and carries over if sold second hand. I believe for the money that it will be hard to beat their performance. Also a large listening room is preferred with these speakers to appreciate what they are capable of producing. For those tube amp lovers I have heard (by word of mouth only) that the Bryston's lean towards a tube sound. If you have a chance of auditioning these 4 amps that you've mentioned by all means line it up, for it will be well worth it to you and other Audiogon members. Take your time in choosing and above all HAVE FUN doing it.

The Nautilus 801s will perform very well in a large room w. the right cables and a high power amp. I prefer the Levinson and then later you can vertically biamp w. the Levinson. Otherwise I would use the Krell monoblocks.

Dear All,
Thanks for the very detailed responses.After reviewing all the replies I come conclusion of deleting both the extremes CJ and Krell and arrange an audition for the mark levinson and bryston.Cjs premier 12s are very good amps I enjoyed them for 5 years in my previous system with Martin Logan CLS which was bit shy on both extremes.Since I want to move one step ahead and design a system with mids like CLS and good extension on both sides of the spectrum in a 20'x19' room. I will short list my audition to only two amps and get back with my findings.It was very surprising that no body reccomend Krell, any comment!
Kind regards from the other side of the world (Pakistan)
Ali

Ali,

I would recommend the Krell but not the MDA 300s. I would prefer two FPB 600s on the B&W. It would be magic above & beyond. I know that the B&W shine w. vertical biamping which is a much less expensive alternative then buying 4 monoblocks. Your choice was for Levinson 333, not my favorite sound but if you run 2 of them it would be best. Better would be two FPB 600s in my opinion. I have owned the 801 so I hope this clears things for you. The 801s love power & can play loud. Big difference from the Martin Logan designs. You will enjoy them. Very few speakers can do what they do at thier price. You will need to spend about $40K to get the ability to play loud w. out strain from most other speaker brands.

I also highly recommend Krell Amplifiers. I've heard the N801s powered by the FBP-300cx and FPB-400cx and both Amplifiers easily powered these Speakers to realistic levels in a fairly large auditioning room. You simply may not need to go beyond either one of these Amplifiers and both can be had here on Audiogon less than $6K (US).