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King KSP412S

The four-valve KSP412 offer the high-school sousaphone player more options for fingerings in the low register, improving intonation. With a 26” bell and .730” bore, the KSP412 is an excellent bass voice for the marching band. The wheeled case makes for ease of transport.


  • .730” bore
  • Four valves extend lower register and offer improved intonation
  • 26” bell
  • .704” bore
  • Four valves
  • Notched main tuning slide
  • ABS case
  • Available in lacquer (KSP412) or silver-plated (KSP412S) finishes
  • King KTU mouthpiece
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