TRB-500 Series Bb Trumpet

A student trumpet of exceptional quality. It features a .459 bore, a brass leadpipe designed by Cliff Blackburn, a 5" bell, MicroLok valve system, Monel pistons, and lacquer finish.

Sonar's MicroLok valve system (patent pending), co-invented by Cliff Blackburn and Steven Wasser of Powell Flutes, revolutionizes valve alignment. During the production process, a custom-made tool sets the piston into its perfect radial and vertical alignment position. A set screw is then tightened to lock the adjustable valve guide and secure the Monel piston into place. While this adjustment is permanent, MicroLok allows the alignment to be easily reset at any time by a trained technician, without soldering. Valves can be easily cleaned and oiled without disturbing the alignment.