I have the VTL 2.5, the bargain model if there is such a VTL. I have tried it paired it with VTL MB450 monoblocks, a McIntosh MC500 and an Adcom 5500. The sound is very neutral. The sound through all of the amps was marvelous, although the MB450s, which are Series I, to me were the best by far. This is the combination I use for attentive listening sessions. The Mac seems to smooth the sound as if there is a light viscous coating on everything. For background music I think I like the Mac the best. The Adcom, although very neutral just didn't light my fire. I am a true VTL believer and lust for a 7.5 preamp and Siegfried power amps. My 450s are ancient and still have the original tubes. To me they are sonically perfect in Triode mode and have proven to be bullet proof. I highly recommend the VTL 2.5 and 7.5.
What are the more subtle sounding tube preamps?
I mean "subtle" as in relatively less tube saturation or color than your average tube-pre. Common sense tells me less tubes as in a single dual-triode, but in reality that may not be the case. I currently have my eye on a CJ Classic. Not sure if that will fit the bill. Any suggestions welcome.