Lowend amp

The Belles amp recommended by @roxy54 above actually looks interesting but I never heard it and don’t know how it matches with b&w. 
Another amp I would recommend and it’s super rare is a McCormack DNA500 but I’m not sure you can get it for $2,000

What model B&w speakers do u have?

Krell has a New line up coming out very soon by June I was told.

AAvic  make  very good amps they are class D but of the highest order ,with technologies others Donot have and sound better then most class AB amps 

well worth checking out.you didnot mention your budget.

@audioman58 

He did...2k. and you're way out of his league.

The Parasound A23+ is in your price range. Damping factor >800. Class A/AB 160w@8ohms.