Amp's suggestions for B&W Nautilus Prestige?

Get rid of the Wadia and ARC, and get yourself the entire top of the line Phonosophie gear.Superb mature sound.

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.

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.