Thank you John !
I will try to use passive line level crossovers and the SET amps to drive channels have ~200k input impedance and enough gain (I think) So it should work even without buffer ,even with my phono pre ~1k output impedance. I'll try it out without the buffer (the one I'm thinking of would probably cost $600-1K) . Funny, that I notice the TVC benefits only when I replace it with something else . I usually worry about amps and speakers and tend to forget that this gizmo sits in between .It doesn't bring attention to itself -must be what audiopholes call neutral heh heh .
Regards, K