Bass from tube amps is often different in quality from SS amps, but not necessarily quantity. In my view the correction of the bass is far more important to the listening experience than the minor (if any) changes or distortions you might add from using a good equalizer. From a purist point of view adding an equalizer might introduce changes detectible when you do an A/B comparison, and some might hear the effect of these changes when actually listening to music, but that bass boom you will always hear and it is inappropriate and disruptive to the remaining music, for me at least.
Of course no one has asked you the degree of bass boom you are experiencing. If its on the order of 6db I wouldn't consider it a big deal - it would be something I would be albe to live with (and do). But if your are talking 12 to 15db I would find that too much. Have you actually taken a SPL meter and a test disc and checked out your room and the best available listening and speaker positions with it? If not, its worth doing.
Of course no one has asked you the degree of bass boom you are experiencing. If its on the order of 6db I wouldn't consider it a big deal - it would be something I would be albe to live with (and do). But if your are talking 12 to 15db I would find that too much. Have you actually taken a SPL meter and a test disc and checked out your room and the best available listening and speaker positions with it? If not, its worth doing.