Not true in really large stadiums (as I have performed in). The pit in particular benefits from amplification. How you ask??? Well, we like to put lots of emphasis on musicianship in the activity, and banging the #### out of keyboards so the audience can hear them does not really equate with being musical (and yes, that is what was/is done without amps, if you were wondering). I remember one year at Finals with my corps where people were complaining about not being able to hear the pit during the ballad (when they were the only section playing, and playing closer to the way the actual instruments were meant to be played). And since when were football stadiums designed to be as acoustically friendly as concert halls???
Also, other instruments are now able to be used, such as BD using the udu last year (which would never have been heard without being amplified. And no, I didn't march BD, so I am not biased in any way.)
You're right, because there are bigger things to me in life than 'the downfall of drum corps b/c of amplification.'
Well, people seem to still love Cavies and Scouts... they use amps.
There will always be some new thing to ##### about:
Assymetrical drill: Oh my God, the downfall of drum corps (####, Pete Emmons is at BD, maybe that's the problem )
TWO VALVES!!!: WHAT WERE THEY THINKING!!!
THREE VALVES!!!!!!!!!: THE WORLD'S ABOUT TO END!!!
Bb: Boy, how soon that was forgotten due to the new heresy........
Amplification.