Dunlop MXR MRT01 Mr. Talkbox Signature Talkbox Vocal processor

Signature Talkbox Pedal for Vocal-Like Expression

The Dunlop MRT01 Mr. Talkbox Signature Talkbox brings the unmistakable vocal-formant effect into a compact, pedalboard-ready format. Co-designed with Byron Chambers — known worldwide as Mr. Talkbox for his work on Bruno Mars' Grammy-winning "24K Magic" — this unit refines the classic MXR M222 concept with modern performance upgrades. Players feed an instrument signal into the pedal, where an internal driver pushes sound through an 8-foot tube held in the mouth, transforming mouth movements into vowel-like, synth-style textures.

Built-In Amplification and Signature Switches

What separates this signature edition from a vintage talk-box rig is the self-contained 25-watt internal amplifier paired with a lightweight neodymium driver, delivering ample headroom and improved low-end handling without an external power amp. Two signature switches — Gain Bypass and Mute — give players control previously unavailable on the standard M222. Gain Bypass routes the incoming signal around the preamp stage and clipping diodes, ideal for keyboard players with hot signals or gospel and R&B performers who need clean articulation. The Mute switch offers advanced output-path control for tight, funky tones or thicker, fuller sounds.

Specifications for Stage and Studio Use

The MRT01 ships ready for performance with a custom gold sparkle enclosure, an 18V power supply, and the cabling needed to start playing immediately. Standard Jack 6.3 mm connections keep it compatible with any guitar, keyboard, or instrument-level source.

• Inputs: Jack 6.3 mm — instrument-level input for guitar, keyboard, or other line sources
• Outputs: Jack 6.3 mm — feeds the included 8-foot tube and downstream signal chain
• Internal Amplifier: 25 W with neodymium driver — eliminates the need for a separate power amp
• Power Supply: 18V adapter (included) — battery operation not supported
• Controls: Volume, Tone, and Gain knobs, plus Gain Bypass and Mute switches for advanced routing

Who Should Consider the Mr. Talkbox Signature

The Dunlop MRT01 Mr. Talkbox Signature Talkbox is the right choice for guitarists, keyboardists, and multi-instrumentalists who want authentic talk-box character without the complexity of a vintage rack setup. Gospel and R&B players will appreciate the Gain Bypass switch for clean articulation during expressive passages, while funk and pop performers can lean on the Mute switch for tight, rhythmic talk-box stabs. Keyboardists with hot output levels benefit from the bypass routing, which keeps the signal pure and undistorted across demanding live sets.