Amp's suggestions for B&W Nautilus Prestige?

Jeff Rowland Design Group MC606 easily covers six channels for $12,800.

http://www.jeffrowland.com/MC606.htm

I would stay with Rowland for all 8 channels, finishing off with a couple of 501 mono-blocks, although you might go with lower watts for the tweeters, like the 201s or even the stereo 102, depending on the power need there. Finding another amp that'll match the Rowland's very low noise floor will be very tough.

I couldn't find a review of Phonosophie equipment, but looking at the chassis it's not in the same league with ARC, Rowland, or even Krell. I'd have to hear a very convincing demonstration to seriously consider it. I know there's more to an amp than the chassis, but it is a big part of controlling EFI and RFI.

Look at Guidocorona's review of the Rowland Capri pre-amp, where he compares it to his ARC Ref3. You might want to consider trading out since you seem to be putting together a no-holds-barred system.

I'm hoping your crossover is balanced. Given all those ICs, it'll be good if you can take advantage of a balanced amp topography.

Dave

Well I have the advantage of hearing all of the products above, and can tell you, it really takes a lot of guts to recomend a niche European brand versus the big guns. The reason behind this is simple , the Phonosophie sounds better, especially in an active system, because the brand itself has a mindset towards active setups. As far as chassis goes, the Phonosopie is better in real life than in pictures and I could hear no sonics artifacts caused by RFI and EMI.

I was told by a B&W representative at Munich high end show, that the Linn Akurate 4200 will not be powerfull enough.
Anther candidates are 4 x Plinius P10.
Link:
http://www.pliniusaudio.com/products/p10.asp

Goodness Sphere, you must get around. Where did you have the pleasure of hearing the Rowland MC606 as a tri-amp solution or as part of a quad-amp? What were its shortcomings vs the Phonosophie equivalent?

Rowland has (or had two weeks ago) the 606 set up in a tri-amp configuration driving a couple of custom Magicos (not anything you've seen in the audiophile mags).

Dave

My apologies, not the 606 but the 501s and all the reference Krells and the ARCs. I recommend the Phonosopie only because the situation demands an active setup. Let me put it this way, the Krells, ARC and the Jeffs make Kari Bremnes sound like top High end gear playing within varying degrees of audiophilia, the Phonosopie made her sound closer to human with a lesser degree of audiophile pyrotechnics. Anyways its just a recommendation, had the requirement been for a passive loudspeaker I would have gone another route depending on the speaker.