Passive preamp vs. powered


I have a custom made passive pre-amp that I purchased from A-gon some months back for about $150. It only has a volume control and 2 inputs - perfect for my needs.

It sounds excellent...

My question is... what would be the advantage of a much more expensive powered pre-amp? Sure, maybe I would have powered switches and more inputs, but I don't need any. Are there some differences in sound quality that I'm not hearing?
djembeplay
IME the one thing that passives have over the actives I've had is transparency -- that 'air' between instruments and voices. Contributing to this is that there are no active electronics so noise floor is lower as well.

It seems like it comes down to body vs transparency in most of these arguments. I am using a Promitheus Ref TVC since most of what i read about passives is that TVC's are superior and play nicer with others then other passive variants.

For the record, i love my TVC. it doesn't seem to suffer, to my ears, to the lack of body argument. What I do run into is lack of gain. This has to do with the other components in my system, including 87db sensitive speakers, but it can be an issue as is well documented.
Tholt,
Dude you beat me to the post. I was about to post my reply and saw that you already mentioned the TVC. You are damn right about the TVC. I use the Promitheus Ref C-Core and it is everything I wanted. When mated with a proper amp, the combination is awesome!! The sensitivity of the power amp is very important though. Preferably less than 1.5V. Quoting a audio guru - "with a high sensitive amp, a TVC will work its magic by increasing the current and lowering the output impedance for the signal it sends to the amplifier."

And YES - all the aspects of music are preserved by the TVC - dynamics, body, texture, weight, etc. But remember - you need a highly sensitive power amp.
Mrtennis, it is true there are those who do not like imaging, bass extension, smoothness or clarity. I've met them, but generally I find that I don't care for their opinions as they are so far from reality. It is my opinion that the more it sounds like reality, the better :)
Mrtennis, I agree with you in that there is an element of subjectivity in what we like or don't like, there is certainly room for personal preference, but I think there is a limit to that argument as well, there is after all good taste and bad taste with some range of difference of opnion, but a speaker that has large anomalies in frequecy response, or lacks balance, or images poorly, a whole slew of "objective" criteria that is measurable is poor by any measure, and if one likes those kinds of abberations from neutrality I think that person's opinion is not likely to be very useful to most people - there is room for taste, but reproduced sound does exist within the range of a basic recipe based on some level of accuracy to the source signal. Whileone might not make a decision on "objective" data alone, it is not a bad starting point either.
"...it is true there are those who do not like imaging, bass extension, smoothness or clarity. I've met them, but generally I find that I don't care for their opinions as they are so far from reality"

Hi Ralph,
I'm probably overreacting to my pet peeve but I'm tired of people suggesting that I don't value "reality" because I don't place imaging as highly as others do on my list of priorities. At its best, imaging is the representation of the "miking" in the recording process. It's actually a nice perk that high-end audio has over live events. I know that you are technically correct - that since imaging is on the recording, it should be reproduced. But since pinpoint imaging is so seldom present in my live event experiences, its presence is less vital for me to achieve a sense of reality. In my humble opinion of course.