Amp's suggestions for B&W Nautilus Prestige?



...I need advice on amps to drive these speakers (snail), budget is $20,000.
They are 4 ways with active crossover, I need 8 channels 100W- 300W.
Amps will stand on a rack- maximum height is 20".
I am using an Audio Research reference 3 and Wadia 581i se.
I prefer to have gain to every channel but it isn't a must.
I thought about 2 x Linn Akurate 4200 (4x111W each).
http://www.linn.co.uk/akurate_4200

Thank you in advance for your time.
128x128tomer_tsin

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.
I am using the Jeff Rowland 616 500X2 250X4 and a 201 for the top with PC1. magic. have tried Classe /Parasound and find this is the best.