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the RT-88 Maxx is the definitive choice for getting the job done
The rim design and proven cup characteristics combine to create a high level of efficiency
Mercer & Barker mouthpieces are highly sought after by elite soloists
When the inventor of the BERP
Don't settle for imitations-these mouthpieces are imported directly from Germany
Mercer and Barker MB5ET Euphonium Mouthpiece Gift cards the RT-88 Maxx is theUsed Mercer & Barker MB5ET Euphonium Mouthpiece Good Condition! Up for sale is a premium, precision engineered Mercer & Barker MB5ET Euphonium Mouthpiece (Large Shank). Meticulously crafted with British design expertise, Mercer & Barker mouthpieces are highly sought after by elite soloists, wind ensemble players, and brass banders worldwide for their exceptional tonal stability and world class response. If you are looking to upgrade your setup with an