The Boston GP-178, designed by Steinway & Sons and built in 2004 by Kawai in Japan, measures 5 feet 10 inches in length and 4 feet 11½ inches in width. It is Boston's flagship "performance grand," offering exceptional tone, balance, and dynamic range in a size suitable for both homes and performance spaces.

This particular piano, serial number 123406, is a second-generation model, featuring several design improvements introduced by Steinway engineers to enhance tonal projection, sustain, and touch responsiveness. It stands as a serious instrument for advanced pianists, educators, and performers seeking the Steinway design heritage at a more accessible price point.

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Highlights of the Boston GP-178

Steinway-Designed, Kawai-Built,

While the Boston line is engineered by Steinway & Sons in New York, it is built to exacting standards by Kawai in Japan, known for its world-class manufacturing quality. This unique partnership results in a piano with the warmth and richness of Steinway’s acoustic design, blended with the precision craftsmanship of Japanese production.

Wide-Tail Design for Rich Tone

The Boston GP-178 features a wide-tail case design, allowing for a larger soundboard area and longer bass strings than many other 5'10" pianos. This means the bass and midrange carry more resonance and warmth—more like a 6’2” piano.

Solid Sitka Spruce Soundboard

The soundboard is made from solid Sitka spruce, tapered for ideal crown and flexibility. This results in a beautifully singing tone, excellent projection, and a broad dynamic range.

Hard Rock Maple Rim & Inner Structure

The inner rim is made from hard rock maple, providing structural integrity and focused tonal energy. A full cast-iron plate also ensures tuning stability and durability.

Duplex Scaling for Added Harmonics

The GP-178 includes duplex scaling, where unused portions of the string vibrate sympathetically, adding brightness and richness to the upper register, just like in higher-end Steinway pianos.

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Delivery and professional tuning are included with the purchase of this piano within San Antonio and the surrounding areas. We will carefully transport your instrument to its new home, ensuring it arrives safely. Once delivered, we provide a full professional tuning so your piano is ready from the moment it’s set up.

We are a family-run small business, and we are always open for anyone to come check out the piano! Just set an appointment with us today, and we can set a perfect time for you and your family to come see and play the piano!

Phone Number - (210)-626-3146

Email Address - rockafellowpianos@gmail.com