What tube pre amp match up with a solid state amp

Bondmanp, if the long runs are a problem, it will be a rolloff in the highs that is the issue.

Yes, Atmasphere, you are correct. By no bass roll-off, I guess I meant impedance mismatches, which is what I experienced with a C-J PV-11. The McIntosh restored the bottom octave. A better match, I suppose. But I don't think I am suffering any high frequency roll-off, either.

Hi Pete, I'm in the same mess ! Have a ML 336 and I want to pare with a tube pre amp. My focus is now on Manley 300B Neoclassic or on the Cary Audio Slp 05. Both very good looking, and well reviewed, but actually I haven't heard any of those.
Does anyone made a comparison ?