I agree about the careful system matching required with any passive, including a TVC. But when it all comes together, the dynamics, timing, bass extension, transparency...etc.... is all there in spades with a TVC. Mine has beaten some high dollar active preamps in my system and I have no desire to go back. However, with that said, my preamp does not sound good in all systems. If the matching amp doesn't have enough voltage gain, then all bets are off. As always, YMMV.
Oz
Oz