Willson WEUQ90 Euphonium – Q-Series Excellence

The Willson WEUQ90 euphonium brings together Swiss engineering and modern acoustic design in a fully professional instrument. Part of the Q-Series, this BBb euphonium is crafted for musicians who demand precision, projection, and flawless mechanical reliability.

Its 11.5" one-piece seamless bell delivers a full, rich tone with powerful projection. Whether used in solo repertoire or as part of an ensemble, the bell’s design enhances resonance, warmth, and clarity.

This compensating euphonium features a .591" main bore and a .669" fourth valve bore, ensuring comfortable airflow, precise tuning, and smooth register transitions. The four-valve layout, with the fourth valve ergonomically placed, offers perfect control in the low register.

The nickel leadpipe and large shank receiver provide excellent tone depth and clean articulation. Whether you’re performing lyrical lines or complex technical passages, this euphonium responds with smoothness and stability.

The four stainless steel pistons are fast, quiet, and durable, equipped with integrated water catchers. The compensating system ensures reliable intonation in extended passages and dynamic contexts.

Made by Eastman Music Company

The Willson euphonium WEUQ90 is now manufactured by Eastman Music Company in Taiwan, the new owner of the Willson brand. Production follows the same high standards associated with Swiss craftsmanship, offering a durable and refined instrument trusted by professionals worldwide.

This Q-Series euphonium is ideal for conservatory students, orchestral musicians, brass band players, and soloists. Its balance of traditional tone and modern construction makes it a reliable choice for long-term performance.

Included with the instrument:

• Standard mouthpiece

• Full maintenance kit

• Q-Series hard case

Whether you're refining your technique or preparing for the stage, the WEUQ90 delivers the quality and expression you expect from a professional euphonium.