About C.G. Conn 8HT The story of the C.G. Conn 88H trombone ultimately begins in 1875 with the vision and determination of one man: Colonel C.G. Conn. Founding a band instrument manufacturing company in the small town of Elkhart, Indiana, C.G. Conn quickly became known for his innovative brass designs and became the largest producer of trombones in the United States and earned the lasting reputation as "America's trombone house." Carrying on this tradition, the 88H is recognized for its unique tone color and refusal to "break up" even at the most extreme dynamics making it one of the most widely used professional symphonic trombones in the world. The C.G. Conn 88H series. Trombones with a future as bright as their past. The C.G. Conn 8HT Symphony trombone features a .547" bore that offers outstanding clarity and projection. The chrome plated nickel silver inner handslide tubes provide the ideal surface for smooth and quick handslide action. The thin rose brass material used in the professional bell produces a deep, warm resonant sound with a quick response. The clear lacquer finish adds a subtle warmth to the overall. The C.G. Conn 8HT professional trombone is ideal for both symphonic and solo performance.