I would agree with Jrd351,with one caveat.VSA's speakers,though high in efficiency,represent a difficult load due to their complex crossovers.My former VR-6s ,at 96db,should be able to be driven by an SET amp.They didn't come to life until I used 600w/ch monoblocks.But the VR-1s are a two way monitor with a much less complex crossover.What effect VSA's "virtual reality {VR}" crossover will represent to the amplifier,is another question.I would advise you {Musiclover58} to borrow an set amp and compare for yourself.There is a large difference between a SET and a push-pull SET.Also between a transistor and tube rectified unit.
The Vivas are successfully driving the big Sound Labs and that should be a challenge for any amp,let-alone a 20-30 w/ch SET.You make the call.
