Detail 01
8.5-inch one-piece bell
Specified for projection and response.

Independent shopping perspective
The AC420BO is a Bb/F Legend Series trombone for symphonic playing, built around a .547-inch bore and an 8.5-inch one-piece bell. The bell is specified for projection and response. Its open-wrap F-attachment uses a standard rotor, with mini ball linkage for smooth action and an adjustable thumb trigger to tailor the operating position. It has a standard fixed yellow-brass leadpipe and standard-weight yellow-brass handslide. The lacquered instrument includes a mouthpiece and lightweight contoured case.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Specified for projection and response.
Detail 02
Provides the listed Bb/F attachment configuration.
Detail 03
Allows a comfortable trigger position and is specified for smooth action.
Detail 04
This model uses a fixed leadpipe made from yellow brass.
Detail 05
Included with the instrument.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It uses a standard rotor in its open-wrap F-attachment.
Yes. The trombone includes a lightweight contoured case and mouthpiece.
Bb/F.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.