The King 3B "Concert" trombone with an F attachment, often referred to as a 3BF, is a popular professional-level jazz trombone known for its bright tone and excellent playability, especially in the upper register.
Design and Features:
The 3BF features a .508-inch bore and an 8-inch yellow brass bell, contributing to its quick response and excellent projection.
The F attachment allows for a wider range and easier access to lower notes, making it a versatile instrument for various musical styles.
The 3BF is a small-bore trombone, popular with professional jazz musicians.
Older models, particularly from the 1960s, are known for their brilliant tone and fluidity in the upper register.
