I just bought a Virtue 1 c/w upgraded PS. Wanted something cheap but decent sounding, and with their return policy---
Anyway, my main system is SET based, with a tubed pre. The Virtue does somethings better, like bass, and drive. It's able to separate instruments and voices well, and percussive material is excellent. The build quality is also very nice.
As it's still breaking in, I'll comment more later.(should also add that I much prefer it with the preamp in the chain)
Of my previous 2 T-amps, this is by far the most satisfying.YMMV, of course.
Don