And to add to Gregm's post, with a tube preamp you can tailor the sound considerably by swapping tubes, so if you change speakers, amps, cables, etc. you can often adjust the tone back to where you like it by throwing in a different tube.
I know my Supratek sounds a LOT different with ElectroHarmonix tubes than with NOS RCA Grey Glass. You just don't have that flexibility with most SS preamps.
I know my Supratek sounds a LOT different with ElectroHarmonix tubes than with NOS RCA Grey Glass. You just don't have that flexibility with most SS preamps.