I've played 5-6 brands and the Schilke 51D helps me achieve the darkest smoothest sound on my Bach 42 tenor Trombone.

I've played 5-6 brands and the Schilke 51D helps me achieve the darkest smoothest sound on my Bach 42 tenor Trombone.

Should be great for bass trombone or even tenor if your goal is a big, dark sound and a powerful low register.

Improved the sound of my euphonium and really made playing 50% easier.