Color is in the details too not only in tone and timbre. You want it all. Tube preamp is very important, in addition to power amp.
As for DACs, why would any audiophile want to listen in digital what was recorded and mastered in analog and then try to get as close to analog source as possible ? Sounds strange, doesn’t it ?
If it was recorded/mastered in digital then, well, you have no choice, though good records still sound better even if the recording/mastering was done in digital.