Conn 88HKO Trombone


.547″ (13.89mm) bore
.562″ (14.27mm) bore through open wrap F attachment
9″ (22.86mm) rose brass bell

Out of stock, Available to order


Conn 88HKO Trombone

The Conn 88HKO Trombone features a .547″ primary bore combined with a .562″ bore open wrap F attachment that offers outstanding clarity and projection with an open feel. The chrome plated nickel silver inner handslide tubes provide the ideal surface for smooth and quick handslide action. The rose brass material used in the large 9″ diameter professional bell produces a deep, warm resonant sound with great projection. The clear lacquer finish adds a subtle warmth overall. The C.G. Conn 88HKO professional trombone is ideal for both symphonic and solo performance.

  • .547″ primary bore
  • .562″ bore through F attachment
  • 9″ rose brass bell
  • Open wrap F attachment with standard rotor
  • Rose brass outer slide
  • Clear lacquer finish
  • C.G. Conn 5G mouthpiece
  • 7552C woodshell case

About C.G.Conn

The story of the C.G. Conn 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.” C.G. Conn trombones are recognized for their 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. C.G. Conn trombones, a future as bright as their past.

Additional information

Weight 21 kg



Bb/F tenor






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