Is the YCB-621S a CC or a C tuba?

It is a C tuba, listed in the key of C. That means it reads and fingers like a concert-pitch C instrument rather than a BBb or CC tuba.

How does it compare with a full-size C tuba?

It is a 3/4-size instrument, so it is smaller and easier to handle but has less raw power than a full-size orchestral tuba. It suits school, community and smaller ensemble work better than a large symphony section.

What valves does it have?

It has four front-action pistons made of monel alloy. Front-action valves sit on the front of the body, unlike the rotary valves found on many German-style tubas.

What is included with the tuba?

It comes with a Yamaha BBC-69 case and a 67C4 mouthpiece. You supply your own care items and stands.

What is the bore and bell size?

The bore is .689 inch and the upright bell measures 14-3/8 inches. That combination gives a focused sound that still carries in a band.

Yamaha positions it for students and professionals. It fits players who want a four-valve C tuba that is compact and consistent rather than a large orchestral instrument.