The Jupiter JEP-570L 4-valve euphonium is a good step-up instrument. Although it is a non-compensating model, it does offer the student an introduction to the fourth valve and its benefits, without the price tag generally attached to fully compensating models. This feature, combined with Jupiter’s excellent build quality,makes this instrument a good choice for the advancing student. 14.5mm bore. 280mm bell. 4 nickel silver valves. Removable valve section for easy repair or cleaning. Angled left hand 4th valve. Lacquered brass body with neck trim. Supplied in wood frame case.