B&W 801 separate amplifier just for bass drivers

so, why not consider other amps. Does it have to be Levinson? what about Audio Research 300.2, BAT VK600, McCormack DNA-500, Krell FPB?
can't you seel the ML and get a used Krell FPB600 on Audiogon, for example?
I think you may encounter a problem with the 2 different amps like that driving these speakers. You may get a timing issue where the bass will not be always on time with the rest of the spectrum. I don't think you'd like that. My advise is to go with a single amp or a monoblock configuration. This is more rational than using Rotel along with Levinson. What I would do, if I wanted to drive the 801s properly, I'd get one strong amp or a pair of monoblock amps. The 801s can not be underpowered and this is important.

AK, I've heard FPB series amps some time ago and didn't find them harsh. It depends on other equipment as well. McIntosh and Classe amps sound quiet nice with B&Ws as well.

I heard N801 with Classe and Mac equipment. I thought they sounded very smooth with Mac but had a little more life in them with the Classe. If your taste in music is mainly classical and jazz, I wouldn't hesitate to recommend McIntosh. I beleive the amps I heard were MC501 monoblocks. Unfortunately I can't recall the Classe model but it was one of their bigger amps.