PrimaLuna - Read this months Stereophile review of the YG Acoustics Carmel 2. Stereophile editor John Atkinson won't even use tube amps to write speaker reviews because they measure like crap but did not get satisfactory bass from even the Parasound Halo JC-1 and $24k MBL solid state mono amps.
He had a PrimaLuna HP integrated there for measuring and a review and recalled how well it measured and tried it. In triode mode, no less which is only 36 watts. And the results were so good that's how he finished the review. There's a thread here somewhere from a guy that said it was better than his McIntosh MC601 monoblocks which impressed me enough to buy.