The Pro-Line Concert Hall Series Two-Piece French Horn Mouthpieces, from Marcinkiewicz, are of a unique design, and are played by some of the most discerning horn players. Rims are screwed on and are interchangeable. These mouthpieces are numbered in a logical progression from wide to narrow and deep to shallow. They are available as separate rims and bodies, and complete two-piece rim sets. These are some of the finest mouthpieces made in the world today and standalone as such.

The patented Pro Line Concert Hall mouthpieces have a unique exterior design that offers optimal nodal enhancements by placing integral vibration dampers in specific, calculated locations. The net result is a mouthpiece that gives an extremely stable center of pitch, allows unprecedented dynamic levels without distortion, and provides a rich dark symphonic sound without adding the mass of a traditional heavy mouthpiece.