Wilson Audio Owners.....Sophia's

I tried a bunch of tube and solid-state amps with the Sophias I owned, and I agree, they are a relatively easy load, an easier load than the Watt Puppy 7's I later owned. Tube amps do seem to give the speakers some dimensionality and weight that SS amps just didn't do. If you want the ultimate in bass, a Wilson strong suit, SS amps are the ticket, but I thought some of the more neutral high-powered tube amps from Conrad-Johnson and Audio Research gave a bigger soundstage and instruments with more heft, while only reducing the ultimate bass definition and extension to a small degree. I tried BAT and Jeff Rowland SS amps and I could never get used to the flat soundstage, but finally settled on some Essence amps that were far superior in speed, dynamics, bass, and detail to anything I heard before, while having some of the dimensionality of tubes.

You can use Lamm 2.1 for wonderful music.

I owned the originals and upgraded to the two's. I use a CJ 350 ss amp. I love this combo.--(for whatever that's worth.)

Anyone tried the Krell FPB's with the Sophias?

I own the original sophias. They are very revealing of associated equipment.
I find they work well with approx 50-75 tube watts, but when fed high power tubes they create a huge three dimensional stage wonderful tonality and well resolved bass.

I use Audio Research VM220 Monoblocs and the combination is gorgeous.

The sophias, (and all Wilsons) require meticulous set up and room placement. If this is not accomplished, you'll NEVER experience their true glory.