Discover Raw Tube Sounds from the Birth of Electric GuitarThe UAFX Woodrow '55 Instrument Amplifier pedal captures the legendary sound of American tweed tube amplifiers, used by artists and producers for decades, from The Eagles and Chuck Berry to Neil Young.

Authentic Tweed Sound on Stage and in the StudioWhether you're looking to replace your amp and connect directly to the PA system or record tracks in your DAW, Woodrow '55 provides inspiring, album-ready, expertly mic'd vintage tweed amp tones in seconds.

Classic Tube Growl and Gritty DistortionBuilt on powerful dual-engine processing and world-class UAD modeling, Woodrow '55 delivers pleasing clean tones, rich overdrives, and gritty distortions that add character to any composition.

Install a Modified Amp in Your PedalboardEnhance your tweed tones with proven British speakers and boosters – including preamps from the iconic KORG SDD-3000 rack unit and Maestro EP-3 tape delay – all at the push of a button. Only Woodrow '55 places authentic tube growl and classic mods at your feet.

Achieve Authentic Tweed Amp Sounds from the BeginningFeaturing classic mic and speaker setups directly from UA’s award-winning OX Amp Top Box, Woodrow '55 instantly provides professional studio-quality guitar tones.

Combo 12" Speaker ModelsBLU15: 15W Celestion BlueJP12: Stock Jensen P12RGB25: 25W Celestion GreenbackFree additional speaker cabinet models (available via the UAFX Control app):Marshall 4×12 with Celestion V30 speakersFender 4×10 Bassman cabinet with Jensen P10R speakersFender 1×12 cabinet with vintage JBL D-120F speaker*Product names used in this description are trademarks of their respective owners, who are not affiliated with Universal Audio Inc. These names are used solely to identify the products studied during the creation of the Woodrow '55 Instrument Amplifier sound models.

Customize Your Tone with the UAFX AppWoodrow '55 gets even better with the UAFX Control mobile app. Download artist tones, load and archive your presets, and dive into the world of the tweed amplifier where it all began.

Key Features:Powerful UA UAFX dual-engine provides the most authentic mid-'50s American tube combo sound ever in a pedal.

Includes world-class speaker cabinet, mic, and room tones from UA’s award-winning OX Amp Top Box.

Available boosters, speaker swap options, and additional free speaker cabinets and mics downloadable upon registration.

Option to disable cab/mic emulation and use the unit before an amp for extra tone and overdrive.

UAFX mobile app allows footswitch configuration, preset loading and archiving, unlocking additional features, downloading artist presets, and more.

Timeless UA design and craftsmanship built to last for decades.

Specifications:Power: Isolated 9 VDC, center-negative, minimum 400 mA (power supply sold separately)Inputs: 2 x 1/4" TS (right input for stereo and 4-cable method connections)Outputs: 2 x 1/4" TS (right output for stereo and 4-cable method connections)USB: Type-C for updates via computerHeight: 6.5 cmWidth: 9.2 cmDepth: 14.1 cmWeight: 567 g