if you stick to current production equipment and consider tube amps, other than triode amps, it probably makes little difference whether you use tubes or solid state. well deisgned tube and solid state amps, tend to sound alike these days.
regarding cd players, again with reference to current production cd players, i have found that most are not particularly tube sensitive and that there may not be much of an advantage having a tube analog stage, when you have 24/192 chips and up sampling.
the exception to the above applies to older gear, say 80's and early 90's cd players, and tube amps from the same period. the difference between tube and ss gear was more apparent at that time.
regarding cd players, again with reference to current production cd players, i have found that most are not particularly tube sensitive and that there may not be much of an advantage having a tube analog stage, when you have 24/192 chips and up sampling.
the exception to the above applies to older gear, say 80's and early 90's cd players, and tube amps from the same period. the difference between tube and ss gear was more apparent at that time.