Name: YAMAHA B1 PW UPRIGHT PIANO POLISHED WALNUT 109CM
SKU: B1 PW
Availability: BackOrder

An upright for the next generation – The Yamaha B1 PW Polished Walnut 109cm

For more than a century, Yamaha Corporation has crafted fine pianos with precision and passion. Drawing on that heritage, the b Series was created to inspire the next generation of musicians. As a result, the B1 offers an elegant and compact design combined with a clear, resonant tone.

Whether you are a beginner, an ambitious student, or an experienced pianist, this upright responds with precision and musical warmth. Above all, it delivers an enjoyable and reliable playing experience every day.

Closeup of soundboard and ribs with Yamaha logo (three intersecting tuning forks).

Small space, big sound

Although compact in size, the B1 PW produces a surprisingly full sound. Inspired by the renowned Yamaha U Series, it features soundboards and ribs crafted from premium spruce tonewood. Consequently, the piano delivers depth and projection that exceed typical entry-level expectations.

View of the back of an upright with the soundboard and posts visible.

Back posts, forward thinking

Thanks to years of advanced research, including Yamaha’s proprietary wood-drying process, the back posts retain their strength and shape over time. Therefore, the instrument maintains structural stability and tonal resonance for many years.

made in Japan seal

Advanced V-Pro frame

Yamaha pioneered the V-Pro Vacuum Shield Mold casting technology to create stronger and lighter frames. Each b Series piano features a full-perimeter frame built to exacting standards at the Iwata Forge in Japan. As a result, the structure is both durable and acoustically efficient.

Rows of installed hammers on an upright piano being built.

Specially designed hammers

The Yamaha B1 PW hammers are crafted from high-quality materials and carefully tailored to this specific model. Because of this precision design, players enjoy optimal tone, balanced response, and long-term reliability.

A man smiling as he plays from sheet music on a Yamaha upright piano in his living room.

Hand-wound bass strings

At Yamaha’s Kakegawa factory in Japan, skilled artisans oversee the winding of pure copper bass strings. Moreover, each string is individually balanced and tensioned to meet the exact tonal profile of the b Series.

Closeup of the aluminum rail in a piano being built.

The world’s first aluminum action rail

The patented Yamaha aluminum action rail enhances keyboard stability. In particular, it helps the action resist subtle changes in humidity and temperature. Consequently, the touch remains consistent over time.

Line drawings showing dimensions.

Specifications

Designed by Yamaha in Japan
Crafted by Yamaha in Indonesia
Soundboard: Laminated Spruce
Soundboard Ribs: Spruce
Back Posts: 4
Bridge Construction: Two-piece separated
Wood seasoned for destination: Yes
Frame: V-Pro Vacuum Shield Mold Process
Key Material: Seasoned spruce
White Key surfaces: Acrypet™
Black Key surfaces: Phenolic Resin
Pedal: Soft/Mute/Damper
Weight: 384 lbs (174 kg)