The cup is a bit shallower and 0.7 mm narrower than a 6.5AL, so it helps with the higher notes, but it is still big enough and allows enough airflow to have a good dynamic range and rich tone.

, I don't get as much dynamic range, and it doesn't allow for enough airflow through the horn.

The cup is a bit shallower and 0.7 mm narrower than a 6.5AL, so it helps with the higher notes, but it is still big enough and allows enough airflow to have a good dynamic range and rich tone.

, I don't get as much dynamic range, and it doesn't allow for enough airflow through the horn.

The cup is a bit shallower and 0.7 mm narrower than a 6.5AL, so it helps with the higher notes, but it is still big enough and allows enough airflow to have a good dynamic range and rich tone.

I have enjoyed using it in my euphonium as well as my valve trombone.

I am a euphonium player, and Bach recommends this mouthpiece for euphonium, so I decided to give it a try because I wanted a mouthpiece smaller than a 6.5AL to help with the higher notes, and I don't care for a 12C because low notes don't play so

I have enjoyed using it in my euphonium as well as my valve trombone.