The M30 Lyre clarinet mouthpiece is similar to its 5RV counterpart. The biggest difference between the two is the M30 Lyre's larger tip opening and longer facing. This gives the mouthpiece Lyre an exceptionally great quality of tone and sound along with flexibility and roundness. The M30 Lyre has a 113.5mm tip opening and a long facing Vandoren mouthpieces are known for their high, uniform quality, among the best of the mass produced, and are especially popular among clarinetists. The Vandoren line is extensive. It covers all woodwinds and offers designs suited to a variety of playing and musical styles. The difference between Profile 88 and Traditional mouthpieces is in the exterior angle of the beak. Therefore, the musician is free to choose the model which suits his purpose in terms of best playing position, easiest sound projection, greatest playing comfort, and the most controllable and precise articulation. Vandoren has developed the 13 Series mouthpieces specifically for American clarinetists using A440 pitch.