I didn't realize they changed the standard 3.5 if that's what you mean.[/QUOTE]
There was an upgrade in early 2019 that made slight changes from the standard. ( Here's my comment on that: http://www.dwerden.com/forum/showthr...G)-Mouthpieces
" I've testing the new K&G 3D mouthpiece for a few days and I have to say that I'm just excited about it. On a visual level there are no significant differences compared to the old one: with a more in-depth analysis the new weighs a few grams less, slightly deeper with a slightly less cup-shaped profile, a little more V profile of the cup with the throat a couple of tenths smaller. As a result it is easier to play with it, the attack of the notes is safer, the high register is very easy to obtain: I arrive effortlessly at F, and the C#, a sore point on my Besson, is no longer a problem. Compared to the previous the sound is slightly darker: with the old I get a brighter more incisive sound. I can say that this is the best euphonium mouthpiece I've ever played with. I congratulate Dennis for the passion he puts into his work to make the life of us musicians easier and more efficient.") Actually, as JakeGuilbo points out, the rim feels wider than the previous one ( in my case 3D), which I don't mind that at all because I can express myself better with larger cup diameter MPs than most others players.
Last edited by franz; 03-13-2021 at 02:26 AM.
2007 Besson Prestige 2052, 3D+ K&G mouthpiece; JP373 baritone, 4B modified K&G mouthpiece; Bach 42GO trombone, T4C K&G mouthpiece; 1973 Besson New Standard 3 compensated valves, 3D+ K&G modified mouthpiece; Wessex French C tuba, 3D+ K&G modified mouthpiece.