B&W 802N's ???amplification???

Although I don't own either the speakers nor the amp I can advise that when I did hear the 802N coupled to a Sim Audio W-5 I was very impressed. Preamp was the Sim P-5 just FYI.
I found there was plenty of good tight bass and the mids/highs were smooth but detailed. While I have always found the B&W line-up somewhat lean in nature the Sim gear seemed to bring a sense of warmth to the 802N. But hey, it was my ears and not my system.

Again, I would recommend the W-5/P-5 combo. Also a big fan of the plinius SA-100 or SA-102, if you need a ton of power than the SA-250. Also I enjoy my Musical Fidelity M3 integrated and highly recommend that is well if you can find one. I feel like it is a good mix between a sweet solid state like a Plinius and something as lush as tubes. Good luck finding an amp, you got some great speakers to play with.

It depends on the amp you go with. For example, a Mark Levinson 334 at 125 watts will out perform a Bryston 4B with 250. You will need a minimum of 125 watts. By the way, Mark Levinson amps sound especially nice with the N802.