My Clarinet Stuff

About Gleichweit Mouthpieces & Barrels

The maker

Johannes Gleichweit

Vienna, Austria — Mouthpiece Maker since 2003

Johannes Gleichweit has dedicated over two decades to perfecting the clarinet mouthpiece. In 2004 he patented a unique O-ring sealing system to replace traditional cork connections — a design now widely adopted across the industry. After co-founding Maxton in 2008, he relaunched Gleichweit in 2019 to bring his most refined work back to musicians worldwide. His philosophy is simple: every player deserves a mouthpiece that brings them closer to their ideal sound.

20+
Years of mouthpiece making
'04
O-ring patent granted
2019
Gleichweit relaunched

CNC Precision Manufacturing

Every Gleichweit mouthpiece is machined from high-grade synthetic material to tolerances measured in hundredths of a millimeter. The result is batch-to-batch consistency that professional players can depend on — no variation between pieces of the same model.

Full Clarinet Range

From Eb clarinet to contrabass, Gleichweit makes mouthpieces across the entire clarinet family. Whether you play in a symphony orchestra, a chamber ensemble, or as a soloist, there is a Gleichweit model designed for your instrument and your sound.

Vienna Tonal Character

Gleichweit mouthpieces are built in the Viennese tradition: warm, focused, dark, and centered. They reward players who want depth and resonance without sacrificing response or flexibility in the upper register.

Continuous Collaboration

Johannes works directly with world-class soloists and orchestral musicians to refine each model. Player feedback drives every design decision — from facing geometry to chamber dimensions — ensuring the mouthpieces evolve with the needs of serious clarinetists.

Timeline
2003
Johannes Gleichweit begins developing clarinet mouthpieces in Vienna, Austria.
2004
Patents the O-ring sealing system — a new approach to barrel-mouthpiece connection that replaces traditional cork. The design is now widely adopted across the industry.
2008
Co-founds Maxton, bringing his designs to a broader manufacturing context.
2019
Relaunches the Gleichweit brand independently, making his most refined mouthpieces available directly to musicians worldwide.
2024
Gleichweit reaches US players through My Clarinet Stuff, with a growing presence among students, teachers, and principal orchestral clarinetists.
Played by
Matthias Schorn — Vienna PhilharmonicDaniel Ottensamer — Vienna PhilharmonicJose Franch-Ballester — UBCOgnjen PopovicGiammarco Casani

Not sure which model is right for you? Try up to 5 mouthpieces at home for 7 days before committing to a purchase.

Explore the Test Box