I too introduce myself to share my experience with K&G mouthpieces. They are by far the best mouthpieces I have ever played with ( euphonium, trombone and baritone). Actually, the comparison table that appears on the site can be misleading, in the sense that the measurements of the internal diameter can be considered exact ( making the measurement on a curved surface does not give a reliable result in absolute terms) but the K&G mouthpiece, compared to another of different brand with the same inner diameter feels smaller on the chops. probably the rim shape has such a conformation as to give this sensation. For me they are the most comfortable mouthpieces I have ever had which allows me a stamina increased by 100 percent with exceptional flexibility an at the same a safety in the attacks. As for the shank I have not encountered problems of any kind; they adapt perfectly to my instruments. I highly recommend them.
Last edited by franz; 11-10-2020 at 03:45 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.