Allows me to play harder reeds, which support the high notes, yet I don't struggle with that all too familiar airy sound and getting out of breath from blowing so hard to get a sound out.

Very responsive and focused/quality sound.

My son loves the sound quality of this mouthpiece

It produces really good tone quality, when paired with the correct reed, and gives me that warm tone quality I've been looking for

Either way, one might even go so far as to collecting the M15, CL5, and BD5 B flat Clarinet Mouthpieces or the CL4, CL5, and CL6 Masters B flat Clarinet Mouthpieces, and the results are always the same.

Best clarinet mouthpiece I have ever played

He is a 4th year player in High School marching band and loves his bass clarinet.

I always loved the ease of response and articulation of the Masters.

The most notable improvement over other mouthpieces is its ease and control in the altissimo, without shrillness

I've played on a CL6 for years, and I really love the feel

He really liked the sound and feel of this one.

Either way, one might even go so far as to collecting the M15, CL5, and BD5 B flat Clarinet Mouthpieces or the CL4, CL5, and CL6 Masters B flat Clarinet Mouthpieces, and the results are always the same.

While the M15 and BD5 have been distributed fifteen years apart, the Vandoren CL5 Masters B flat Clarinet Mouthpiece might as well moderate between the earlier and later counterparts, and that moderation also applies to the CL4 and CL6 Masters B flat Clarinet Mouthpieces

The m15 has very responsive articulation and clean transitions between registers.

Intonation is practically perfect

Mouthpiece plays well with good intonation

However, if you play on an older model R13 or another make of clarinet I prefer the CM1005 model which is tuned to A=442.

The m15 has very responsive articulation and clean transitions between registers.

The m13 had very bad articulation compared to the m15 and the Clark Fobes

Articulation is easy and the registers are even and consistent.

This mouthpiece keeps the articulation and ease of response but improves the clarity, tone, and intonation of my clarinet(yamaha CSG).

It produces really good tone quality, when paired with the correct reed, and gives me that warm tone quality I've been looking for

BD5 takes takes soft reeds.

Allows me to play harder reeds, which support the high notes, yet I don't struggle with that all too familiar airy sound and getting out of breath from blowing so hard to get a sound out.

It is also very reed-friendly; I've paired it easily with Vandoren V21, regular Reserve, and Grand Concert Thick Blank reeds all with stellar results