Specifications:

• 4/4 size "C" tuba
• .748" to .825" graduated conical bore
• 5 valves in your choice of all rotary or 4 piston and 1 rotary
• 17 3/4" bell.

Basd on the PT-3, the PT-4 features a larger bell, conical bore, and more open wrap for easier blowing and larger sound. Perfect for a solo and small emsemble/lager ensemble crossover horn.