Pre and Amp suggestions for B&W Nautilus 804?

My Musical Fidelity A3.2 is warmer than Pass and Sim integrated (though I've heard the separates are warmer) and to my ears better than Classe.
I use Audioquest Granite which is 60% off from Audio Advisor. This warms up the bass and relaxes the highs.
Rowland and bi-amped Electrocompaniet are two other great amp options but much more espensive.

I do no think I will do integrateds anymore.
The BAT integrated looks interesting; but for the same money, I don't know...

I am not interested in SSPs either.
Thanks for the imput, but I am looking for some feedback on solid state preamp/amp two channel systems.
I want them to be warm and have dynamic bass with amps rated at 120-200W into 8ohms.
Thanks for the cable imput.
I will look into those.

The ARCAM FMJ C30/P1 makes a great combination for the Nautilus, delivering great bass and outstanding warmth. Better than the Moon I-5 Intergrated.

I've had a pair of 804's for about 8 months. I've used them with SimAudio P-3 and P-5 preamps, and for amplification I've used an older SimAudio 4070 as well as a used Sugden Au51p. Both amps worked quite well. The Sugden is a 10 year old design, with lots of class A bias and good current delivery. I have had very good results using it on the 804's - it sounds tomally richer and more dynamic than the 4070. In terms of new solid-state gear, I'd probably recommend the SimAudio P-3/W-3 combo as providing a very high level of transparency, warmth, and dynamics for the price.

However, the very best I've heard my 804's sound is with a tube integrated. But not just any tube integrated - the KR18 BSI from KR Audio. It uses the 300BXLS tubes and puts out about 20 wpc with excellent current drive. This amp drives the 804's to near perfection, with smoother highs, more dynamics, a richer midrange and much better bass than any SS combo I've tried. It makes them into very musical speakers indeed.