F attachment rotary valve extends the range of the trombone, enabling alternate slide position and faster playing when engaging the thumb trigger. 

Hand slides made of higher quality materials to precise specifications result in an ultra smooth and easy-to-play slide. 

One-piece, hand-hammered bells provide enhanced clarity, resonance, and projection. Yellow or gold brass varieties offer a wider range of tone color and timbre options.

Different bore sizes expand the stylistic range of the trombone. Larger bores have a distinctly deeper, richer sound than smaller bores, which are known for a quicker response and more focused sound.