In my opinion, you are not going to be able to move three 12" (or are they 14", I don't remember) woofers very well with a low powered tube amp. You won't get a whole lot of bass out of them, as they require tons of current. I lived with the Focus since 1990, and have just recently replaced them. I was very close to getting a Manley Stingray for them, until I heard the two together. Thin, but great midrange.
Recommendations for tube amp to replace Plinius
I am driving a pair of Legacy Focus speakers with a Plinius 100 mk3. The Focus speakers have an impedance of 4 okms and a sensitivity of 96db. As such the speakers may be a good match for a tube amp. Any recommendations for a tube amp in the $2500.00 used market range? The rest of my system consists of the Placette passive pre-amp and a Cary 306/200 cd.