Passive Preamps

I second Tholt on the Promitheus TVCs. One more point I would like to add is that in case of TVC the amp's input sensitivity is VERY important. With a TVC, the input sensitivity of a power amp better be below 1.5V. With this n mind, there is absolutely no loss of dynamics or body or weight. The positives aspects with the addition of a TVC in your system are something to be heard and seen rather than describe in a thread.
So, system matching is very important.

Tholt,
no need to apologize. I was not aware of the significance of these measurements till I asked these same questions to a GURU on this forum. He has explained in detail about the TVC and the attenuation it does to the incoming volts. Send me a PM and I can send you the explanation he gave me.

xonex77,
Did you experience one recently? Curious because you revived an old thread. TVCs ROCK!!

Agreed that passives are not recommended foe every system. You have to carefully put together a system so that passives can fit in. But a good passive can out gun an expensive amp in a matching system. That is my experience.