I'd say that's the case with ALL instruments, not just sax and clarinet.Steve: Just to keep this going, I'm not so sure that the body material (Rosewood, Grenadilla, silver-plated brass, hard rubber, etc.) makes much difference in how a clarinet sounds. This same discussion (argument?) goes on all the time with saxophones, and so it is with clarinets.
I've mentioned, as far as flutes go, there seems to be some evidence that wall thickness and the amount of toneholes make a larger difference in sound than material.
IMO, people are trying to compare a wind instrument to a violin or other stringed instruments that happen to have a resonating chamber. The material that the resonating chamber is made out of really does make a difference for these instruments, but a clarinet is not a violin.
FWIW, my overall opinion isn't that the material makes the difference for clarinets but it's because most professional quality clarinets are made out of wood that people think wood = better sounding. They should be thinking professional model > student model.
I *believe* someone here mentioned that one of the Buffet student instruments has the same bore as their R13 (the only measurements I can find on the B12 is 14.65mm and the R13 at 14.60, but the other specs are quite close and SteveSklar sees measurements of 14.64, so YMMV).
And the Buffet student horns are pretty nice.
Metal? I dunno. The horn I had was a Pan American. Not exactly professional-level. There have been a whole bunch of pro-quality silver or silver plated horns.
It's not the material, it's the model. Hey, who cares what it's made out of if it plays like garbage? (Unless you enjoy playing Garbage, that is.)
I've already mentioned the importance of a good mouthpiece, several times. IMO, a good mouthpiece is at least equal to choosing which horn you want, if not more so. Hey, my C85 makes my wife's 1981 Selmer Signet sound like a Series 9. It's made several plastic horns sing, too.