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The workhorse of Conn sousaphones.
The 20K Series BBb Sousaphone from C.G. Conn is the iconic design based on the original Sousaphone design by John Philip Sousa. Constructed from 100% brass, this marching instrument produces a colossal sound that soars over the field. Its large .734" bore and 26" bell enable players to achieve a full range of dynamics. Offset short-action pistons provide an ergonomic feel and ultra-fast response. Most importantly, the 20K features standard heavy-duty bracing to handle the demands of today's marching activities.
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