Built upon the trusted foundation of the K-Series, the Master Series is shaped around a refined structural design created to stand firm over time. At its core is a strengthened back framework that provides quiet confidence, supporting the instrument as it holds tension, preserves balance, and allows the sound to develop freely. This underlying strength gives the piano a sense of stability you can feel from the first note, particularly in the lower register, where depth and presence rely on a structure that will not yield. The soundboard, crafted from carefully selected, straight-grained solid spruce and subtly tapered by hand, is allowed to resonate naturally, responding with warmth, clarity, and control. The result is an instrument that feels grounded and assured, a piano whose strength is never heard, but always felt. A foundation of stability that supports expressive tone and preserves the musical character of the Master Series for years to come.

The Master Series expands expressive possibilities through the simultaneous use of the muffler mechanism and sostenuto pedal — a rare combination in upright pianos.
By adopting a dedicated lever control for the muffler, both quiet practice and advanced pedal techniques can be enjoyed without compromise.
This thoughtful design provides greater versatility and expressive freedom, adapting seamlessly to the needs of every pianist and performance setting.

The redesigned pressure bar and stainless bearing bar provide greater string stability and clearer tone, delivering a richer, more brilliant sound across the upper register.
High-quality tuning pins enhance long-term tuning stability, ensuring the piano maintains its beautiful, refined tone over many years of playing.