Jo-Ral Trombone Straight Mute – Copper Bottom – JRTRB1C4

The Jo-Ral Trombone Straight Mute (Copper Bottom) is a hand-spun metal mute built for consistent response across the full range of the instrument. The copper bottom gives it a darker, richer voice than standard all-aluminium straight mutes—ideal when you want a classic straight-mute edge but with extra warmth and depth.

Like Jo-Ral’s other pro mutes, it’s designed to sit securely in the bell with durable cork pads that grip well and hold up over time, plus a soft felt cap to help protect the bell.

Key Features

• Hand-spun aluminium body with copper bottom for a darker, richer tone

• Designed and tested for even performance across all registers

• Near-perfect intonation focus

• Great for a classic jazz straight-mute sound

• Neoprene-enhanced composite cork pads for strong grip and long life

• Cork pads resist drying out, brittleness, and breaking away

• Soft felt cap for extra instrument protection

• Made in the USA

• Model / Ref: JRTRB1C4

Why Choose This Mute

• Copper bottom adds warmth and darkness compared with all-aluminium versions

• Reliable tuning and consistent feel across the horn

• Secure fit with cork pads designed to last longer than standard cork

• A solid choice for jazz sections, lead playing, and expressive muted lines

About Straight Mutes

Straight mutes are the most widely used brass mute style. They’re cone-shaped and sit in the bell on corks, with sound escaping around the cork gaps. A straight mute typically reduces lows and emphasises highs for a more focused, reedy character—metal models tend to be brighter, while this copper-bottom design shifts the colour darker and fuller.

Specifications

• Brand: Jo-Ral

• Type: Trombone Straight Mute

• Construction: Hand-spun aluminium with copper bottom

• Pads: Neoprene-enhanced composite cork

• Protection: Soft felt cap

• Tone: Darker and richer than all-aluminium models

• Country of manufacture: USA

• Model / Ref code: JRTRB1C4