More open, the same qualities as the M13, easier to play in the upper register. Its facing gives it a particularly pure sound.
Vandoren is one of the most popular and consistent manufacturers of woodwind mouthpieces. They produce a strong range of mouthpieces and accessories that can help improve any players performance. Most of their mouthpieces are made from hard rubber stock.
The "Profile 88" was introduced (in 1988) to offer an alternative to Vandoren's standard beak angle, this beak allows the player to hold the instrument in a different playing position further away from their body.
The "13 Series" was developed for American clarinetists using A440 pitch.
M13 Lyre - THE OPINION OF THE VANDOREN EXPERTS (13 Series)