In my experience, the rubber gaskets slightly inhibit the shell’s ability to resonate. Removing them gives the drum more presence and a fuller tonality, a definite improvement in my opinion. It doesn’t really make the drum ring more in an unpleasant way, but instead, allows the shell to speak at its fullest potential. I don’t know why someone at Ludwig never stopped to consider how those gaskets would affect the shell. It’s a lot of rubber when added all up. The older shells don’t have gaskets and sound awesome. Like others have said, the “ring” of a supraphonic and other snares helps the drum project and cut through the sound of other instruments. I have a 1976 402 and I never muffle it live, mic’ed or not mic’ed. I normally play a coated emperor over a hazy ambassador. Bottom head is very tight, about a “G”. Top head medium tight, about a “D”. The snare has a slight overtone, but in the mix, it sounds perfect. I prescribe to the Simon Phillips method of tuning a drum, tune them up, wide open and let them sing, especially toms. It’s an acquired taste, but once you get used to it, you’ll never want to play muffled drums again.