Eastman ETB428MG Tenor Trombone Overview

The Eastman ETB428MG is an intermediate Bb/F tenor trombone designed for advancing musicians who want the flexibility of an F attachment while retaining the more compact response associated with a medium-large instrument. Positioned within Eastman's performance-level trombone range, it offers an open-wrap configuration suited to concert band, jazz ensemble, pit orchestra, teaching, and general ensemble work.

Eastman ETB428MG Tenor Trombone Specifications

• Instrument Type: Tenor trombone with F attachment
• Key: Bb/F
• Bore Size: .525-inch medium-large bore
• Bell Diameter: 8.5 inches
• Bell Material: Handspun gold brass
• F Attachment: Open wrap with rotary valve
• Finish: Clear lacquer
• Case: Eastman fitted hard case
• Accessories: Trombone mouthpiece, valve oil, slide lubricant, tuning-slide lubricant, polishing cloth

Condition & Setup

This lightly used trombone is in excellent playing order and has been professionally serviced, set up, and play-tested. The lacquer remains bright and glossy overall, with fine scratches, polishing lines, and cloudy rub marks along portions of the bell stem and throat. Minor spotting and surface wear are also present on parts of the rotor linkage and adjacent hardware. The included maintenance supplies provide the essentials for routine slide, tuning-slide, and rotor care.

Who the ETB428MG Tenor Trombone Is For

The ETB428MG is well suited to advancing students, adult ensemble musicians, teachers, and doublers seeking an F-attachment trombone with a more compact feel than a typical .547-inch large-bore instrument. Its .525-inch bore supports an immediate, centered response, while the gold brass bell offers the rounded tonal color commonly associated with that material. It is a practical choice for players moving beyond a basic straight tenor trombone who do not require a full large-bore orchestral design.

Common Questions About the Eastman ETB428MG

How does the .525-inch bore compare with a .547-inch large bore?

A .525-inch medium-large bore generally provides a more compact feel and requires less air volume than a .547-inch large-bore tenor. It can be a useful balance for players who want an F attachment without adopting a full large-bore orchestral setup.

What does the open-wrap F attachment provide?

The F attachment adds alternate slide positions and extends practical access to the low register. The open-wrap layout uses broader tubing curves through the attachment section and is commonly chosen by players who prefer a freer attachment-side response.

How does the gold brass bell influence the tonal concept?

Gold brass contains more copper than standard yellow brass and is commonly associated with a rounder, warmer tonal color. The final response and sound will also depend on the player's air, embouchure, mouthpiece, and musical setting.

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