I carried AudioVector speakers when I was in the business from the mid 80's - mid 90's. They are excellent speakers, solid performance, great build quality and work fine with tube gear & solid state.
Big soundstage and easy to drive. Build quality is excellent and they use some innovative technology. Unlike many speakers using an AMT, they are not even a little bright. Very natural.
I have been flirting with an idea of signing up as a dealer. R1s and R3s are awesome but it is a big jump to the R6 though it is a much better speaker.