In addition to the Reference 3a Capo, you may want to check out the KEF LS50, which Stereophile considers a Class A speaker within its operating range. Another candidate, with its ceramic composite woofer and ribbon tweeter, is the Monitor Audio Gold GX 100.
05-20-13: Simao
I think that's the way to go - along with some speakers that complement what I want to hear.
I've also heard consistently good things about the Nola Boxer.