What is the difference between the marching and concert leadpipes?

The marching leadpipe angles the instrument for carrying in a marching band. The concert leadpipe sets it up like a standard upright tuba. Both are included, so you switch depending on the gig.

Is this a full-size or compact marching tuba?

It is a full-size BBb marching tuba with a 17-1/2-inch upright bell. That gives fuller low-end sound than compact marching models but makes it heavier to carry.

Does it come with a case and mouthpiece?

Yes. Yamaha includes the BBC-32 case and a 67 mouthpiece with the instrument.

How does it compare with a four-valve tuba?

The YBB-201MWC has three pistons, so the low register is less flexible than on a four-valve horn. For marching band parts that stay in the standard range, three valves are usually enough.

School marching programs and players who want one tuba for both marching and concert band. The convertible design and Yamaha build suit students and directors who need reliability.