Eastman ETB428GS Tenor Trombone Overview

The Eastman ETB428GS is an intermediate Bb/F tenor trombone from Eastman's 400-series performance line, designed for advancing players who need the broader tonal scope and low-register facility of a full-size F-attachment instrument. Its open-wrap layout and gold brass bell support a centered, rounded tonal concept suitable for concert band, orchestra, and serious ensemble study, while the silver-plated finish gives this instrument a traditional presentation.

Eastman ETB428GS Tenor Trombone Specifications

• Key: Bb/F
• Bore Size: .547 inch
• Bell Diameter: 8.5 inches
• Bell Material: Gold brass
• F Attachment: Open wrap with rotary valve
• Finish: Silver plate
• Case: Eastman fitted hard case with shoulder strap
• Accessories: Laskey mouthpiece, Slide-O-Mix trombone lubricant, Ultra-Pure valve oil, polishing cloth, packaged care material
• Serial Number: S2502311

Condition & Setup

This floor model trombone is in excellent playing order. It has been professionally serviced, set up, and play-tested by The Mighty Quinn Brass and Winds. The silver-plated surfaces remain bright and consistent, with faint superficial handling and polishing marks visible around portions of the bell stem, branding, and receiver area. The F-attachment assembly and major components are intact, and the instrument includes its fitted case, Laskey mouthpiece, lubricants, and care materials.

Who the ETB428GS Tenor Trombone Is For

The ETB428GS is well suited to advancing students, adult ensemble players, educators, and musicians moving into large-bore tenor trombone repertoire. Its gold brass bell supports a warm, rounded tonal profile, while the open-wrap F attachment is intended to maintain a responsive feel when the valve register is engaged. It occupies the intermediate performance tier of Eastman's lineup, making it a practical bridge between student instruments and the company's professional 800-series trombones.

Common Questions About the Eastman ETB428GS

What does the open-wrap F attachment contribute?

An open-wrap attachment uses a more direct tubing path with fewer tight bends. Many players prefer this design for its comparatively open response and consistent airflow when the rotary valve is engaged.

How does the gold brass bell shape the model's tonal identity?

Gold brass contains more copper than standard yellow brass and is generally associated with a warmer, rounder tonal color. On a large-bore tenor trombone, it can support a broad ensemble sound without sacrificing a centered core.

Where does the ETB428GS fit within Eastman's trombone range?

The ETB428GS belongs to Eastman's 400-series performance line. It provides the large-bore, open-wrap F-attachment configuration used in advanced ensemble playing, while the 800 series represents Eastman's professional trombone tier.

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