Vintage Tube amps

Question
I’ve heard a tube amp once and the midrange was just stupid. I mean wow….but the high sounded set back and were almost inaudble drowned out by the mid range. Was that just the system or is that all vintagetube gear?  It was just a 2 watt amp and it was on Zu dirty weekend speakers. 
If you use say a rebuilt Dynaco st70 and use a quality tube pre will the highs always feel as fessed or if you set it up correctly will they feel more natural to the music? I’m thinking just the set up made it sound like it did. 2 watts and Zu full range drivers….bad room….

I don’t care so much about bottome extension because I love subwoofers but I love the mid range I heard and just want the high end to not be such a struggle to hear…i

any opinions would be welcome