CG Conn Step-Up Model 20KW Brass Sousaphone

About the Model 20KW

The "original" sousaphone. This large bore sousaphone has the most sought after sound for the marching field. Ergonomically friendly as well as improved bracing over time for the demands of todays marching activity. With plastic case.


The "original" sousaphone. An historic design, the Conn 20K originated from the concepts of John Philip Sousa in the early 1900's. This large bore sousaphone has the most sought after sound for the marching field. Improved bracing to meet the demands of today's marching activity along with short action, offset pistons provides great versatility for any sousaphone section. Nickel plated pistons provide smooth, quick action and unmatched durability. Heavy duty wheeled case. Available without case as model 20K.

Conn - Key of Bbb

.734" bore

3 offset short action pistons

26" bell

All brass construction

Clear lacquer finish

Conn 18 mouthpiece

7761C molded plasic shell case with wheels.