The Sophia3 I was listening to were hooked up to an all B.A.T. system. D5 cd player, 3i preamp, and 220 amplifier. Kubala-sosna Emotion cabling throughout.
The bass was pretty good. The speakers definitely retained the "full" quality of the Wilson sound but I didn't perceive any excessive bass. I never liked the extra hump in the low end that Wilson was fond of adding. There didn't seem to be anything extra in the low end. But then bass, more than anything else, is influenced by the room and these were in a pretty open space. So take my experience with a grain of salt.