I don't know, I've never really been able to tell a tonal difference just because of the material. The brightest, harshest pieces I've played were HR. Feels different in the mouth, but thats about it.
Maybe there weren't as many wide choices in HR mouthpieces in the 80s so metal meant brighter? I really don't know much about mouthpiece history, just which ones I like to play
Maybe there weren't as many wide choices in HR mouthpieces in the 80s so metal meant brighter? I really don't know much about mouthpiece history, just which ones I like to play