Ian Bousfield Signature Series S5

First to the dimensions of the mouthpiece, which are unfortunately missing in the description. Boiler inner diameter 25,2mm, bore 6,83mm, depth of the medium Deep (can be found on the manufacturer's website warwickmusic.com). I did not order the mouthpiece because of the "ultimate high-register access" but because it was read on warwickmusic was the mouthpiece is very suitable for beginners / beginners on trombones with large bore and for people who play trombones with both holes. The answer is surprisingly in deep positions very well, in the height but I could not notice any appreciable increase, but the problem is rather with me ;-) All in all, I am very satisfied, the mouthpiece is very easy to play, the speech Is great and I like the sound. Would the mouthpiece rather than allround mouthpiece denote the German description, according to one thinks it is more suitable for top locations. Use a rubber ring in the second groove (from the edge), feel that it makes the tone somewhat more centered.