Preamps waste of money?

Thanks for your opinions on this matter. I hear decreased dynamics using a passive preamp no matter how careful you are about impedance matching and interconnect length (loss of oomph as one of you put it). This was until I placed the stepped attenuator in the input stage of the amp. Going direct from my DAC to amp got rid of the extra interconnect between source and preamp (including all the resistors, caps, wires, switcher, etc in an active preamp), and the dynamics appeared in spades. I literally was startled when I first played music. I really thought I had an active preamp in there, but none of the coloration. My tube DAC actually has 8 kOhm output impedance and my tube amp 100 kOhm input impedance. My SS DAC has output impedance of 50 Ohm. Either way, both macro and micro dynamics are startling. I guess I hit proverbial pot of gold at the end of the rainbow. I can not imagine spending $5k or above for a good active preamp, when I'm getting this kind of result. I've heard a lot of expensive active preamps $15k+, and I don't remember getting this level of transparency, neutrality (more warmth and less thinness, like real life), detailed smoothness, dynamics and soundstaging/imaging. I guess all the stars lined up for me. YMMV.

If the stars lined up for you in this instance then congratulations are in order. I, like many of the respondents on this thread have never heard a good quality active linestage outperformed by a passive or direct source-amp connection configuration.
This set up worked out so I`m happy for you.

To gain absolute purity cred, you need to avoid music recorded by any method other than direct to disc, although ideally music should bypass everything and should only be listened to when performed by naked musicians using acoustic instruments played while they stand on boxes in the open air in a semi circle around your head.

My own experience with this has actually been something along the lines of Dracule1 - except, and I don't want to talk over him on this, that I never really accepted that the Goldpoint SMD (yes, SMD!, and honestly anyone is free to go ahead and laugh if they feel so inclined, but I have rather liked them) series attenuators that I installed inside the rear of a pair of SM-70 Pro balanced monoblocks...that they were somehow actually *Better* than a $3k linestage. Just that they were to me pretty much 'on par' with one, but for a tenth of the price. Would my ears tell me I'd prefer the pre?? Oh, in a sense at least, it's not easy for me to imagine otherwise, but I guess it's just that for me, my pockets usually aren't as deep as most in this hobby, for which I have never, and never will, complain about to anyone - but, 90% of they way there for (in this case) a tenth of the cost was about impossible for me to resist. At least until I finally buy that winning lottery ticket, that is! ;) Cheers.

Your likely just purchasing to cheap of a preamp. Try the Ayre KX-R, it completely removes itself from the signal path and allows the music to flow.
Friends often compare it to moving up many rows at a concert.