Yamaha U1 vs U3: Which Upright Piano Is Right for You?

The biggest difference between the Yamaha U1 and the Yamaha U3 is height. The U3 is around 10cm taller and a little deeper from front to back. That extra size is what changes the sound: a taller cabinet houses longer strings and a larger soundboard, giving the U3 a warmer, richer and more resonant tone — particularly in the bass. Beyond that, the two pianos are remarkably similar, sharing the same renowned Yamaha action and Japanese build quality. The U1 suits smaller rooms and tighter budgets; the U3 is the choice if you want maximum tonal depth and have the space.

What's actually different between the U1 and U3?

Both pianos belong to Yamaha's U Series, first introduced in the 1960s and still among the most widely recommended upright pianos in the world. Both are made in Japan, and both use the same high-quality components and action. The differences come down to dimensions — and what those dimensions do for the sound and feel.

• Longer strings. The U3's extra height allows for longer strings. As with a concert grand, longer strings produce a warmer, fuller tone.
• Larger soundboard. The bigger cabinet houses a larger soundboard, which amplifies the strings' vibrations more richly and resonantly.
• Taller action and touch. The added internal space allows a slightly taller action, which many players and technicians feel gives the U3 a touch a little closer to a grand — smooth, balanced and responsive.

The U1 is by no means a small piano, and it still produces a genuinely rich, professional tone. The U3 simply has a touch more depth and projection.

How do they sound?

Both deliver world-class upright sound. The U3, with its longer strings and larger soundboard, has more power and a fuller bass, which makes it well suited to larger rooms or players who want maximum tonal range. The U1 has a focused, even voice that performs beautifully in small to medium spaces.

It's worth remembering that tone also varies from one individual piano to the next, depending on its soundboard and hammers — and it can be adjusted by a technician through voicing. The best way to judge is always to play a few in person.

Which suits your home and room?

Room acoustics make a real difference to how any piano sounds. Before choosing, think about your space:

• Hard floors, high ceilings, minimal furnishings tend to make a piano sound brighter — a mellower instrument can balance this.
• Carpet, curtains and soft furnishings absorb sound, so a brighter piano often suits these rooms better.
• Smaller rooms and apartments can be overwhelmed by a large piano, while a bigger room may suit the U3's extra projection.

One practical note for teachers and accompanists: the U3's extra height can make it harder to see over the top of the piano during ensemble playing, so the lower U1 is sometimes preferred for teaching studios.

Yamaha U1 and U3 dimensions

If you're weighing up whether a piano will fit, these are the key measurements:

• Yamaha U1: Height 121cm, Width 151cm, Depth 61.5cm.
• Yamaha U3: Height ~130.5cm, Width 153.5cm, Depth 65cm.

Will it fit? The cardboard-cutout method

If you're worried about doorways or tight corners, make a cardboard cutout to the dimensions above and slide it along the floor and around the corners in your home. If it clears the walls, the piano will fit. If it doesn't fit one way, flip it and try going in top-first, then bottom-first. In practice, our professional movers can manoeuvre a U3 around even very tight corners by laying it carefully on its side, so don't rule it out before talking to us about delivery.

What about price in Australia?

As a guide, the U3 typically costs more than a U1 of comparable age and condition, reflecting its larger cabinet and richer tone. Many buyers find that once they've committed to investing in a quality acoustic upright, stretching a little further for the U3's extra depth feels worthwhile — but the U1 remains outstanding value and a true professional standard.

Prices vary with age, condition and finish, and we keep both new and quality pre-loved models in stock. For current AUD pricing — including options like payment plans, local Melbourne delivery and tuning — see our pianos for sale or get in touch.

Which should you buy?

Here's the simple version:

1. Choose the U1 if you have a small to medium room, want a more compact instrument, prefer a lower profile for teaching, or are working to a tighter budget.
2. Choose the U3 if you have the space, want the fullest possible tone and bass from an upright, and value a touch that's a little closer to a grand.

Both are exceptional. If your budget and room allow, the U3 offers more tonal depth and dynamic expression; for many players, the U1 strikes the ideal balance of quality, size and price.

The best decision is always made with your hands on the keys. Come and play a few side by side, and if you're learning, we can also help connect you with a piano teacher in your area.