Universal Audio

Woodrow 55' Instrument Amplifier

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The UAFX Woodrow '55 Instrument Amplifier pedal gives you the legendary American tweed tube amp sounds used by artists and producers for decades, from The Eagles to Chuck Berry to Neil Young.

Built on powerful dual-engine processing and UAD modeling expertise, the Woodrow '55 effects pedal packs sweet cleans, rich overdrive, and grungy distortion. 

UAFX Woodrow '55 Instrument Amplifier Manual – Universal Audio Support Home



Experience Perfect Tube Amp Growl, Stage and Studio

Whether it's replacing your amp rig and going direct to front‑of‑house on stage, or recording tracks into your DAW. Woodrow '55 gives you the inspiring, album‑ready tones of an expertly miked "golden unit" vintage tweed amp, within seconds. Take your rowdy tweed tones further using tried-and-true British speaker swaps and boosts including preamps from the iconic KORG SDD-3000 rack unit and Maestro EP-3 tape delay at the flip of a switch. Only Woodrow '55 puts authentic tube growl & hot‑rod mods under your chucks, docs, or crocs.

Woodrow '55 Instrument Amplifier


Customize your Sound with the UAFX App

Woodrow '55 gets even better with the UAFX Control mobile app. Download custom artist tones, recall and archive your presets, and delve into the tweed amp that started it all. Customize your Sound with the UAFX App 

Powerful UAFX Dual-Engine
The Woodrow '55 features dual-engine processing combined with UAD audio modeling expertise for an extremely authentic emulation of mid '50s American tube combo amps. Cabinet/mic emulations can be bypassed for simply adding overdrive or tonal flavor to your sounds. Or, immerse yourself in epic grungy distortion, all modeled from a golden-unit vintage tweed amp used for decades by everyone from The Eagles to Chuck Berry to Neil Young.
World-Class Amp Modeling
Drawing from the custom mic and speaker pairings of UAD's OX Amp Top Box, the Woodrow '55 provides immediate access to inspiring studio tones. Six unique modeled speaker/mic combos are available to either take on the go or spice up your DAW recording, providing a huge range of sounds.
The Woodrow '55 features three classic boost circuits to give your tone that extra vintage tube growl that only a true American tweed amp can provide. Stock provides users with a clean boost in the stock amp circuit, which adds clean gain without adding distortion and slightly increases midrange and treble while decreasing bass as boost is added. KP-3K provides boost from the KORG SDD-3000 '80s delay rack-unit preamp, and provides a cleaner sound before the boost or pedals are engaged. EP-3 adds the preamp section of a '70s Maestro EP-3 tape delay, unleashing warm tone with plenty of gain, great for thickening sounds.
Two Classic Channels, Endless Possibilities
Staying faithful to the original the Woodrow '55 features two controllable channels, instrument and mic, which directly emulate the volume controls of the classic American tweed amp. The instrument channel is brighter and more aggressive as it is turned up, while the mic channel is darker and cleaner, with more bottom end. Increasing or mixing both volume controls can alter the amp's character, producing overdriven or compressed tones. These channels even feature expanded clean ranges, providing all of the gain of the original with an improved ability to dial in clean sounds compared to the source.
Flexible Controls
With two footswitches, six knobs, and three switches, the Woodrow '55 contains a bevy of control for those who want maximum sonic flexibility. Gain control for both the instrument channel and mic channel, output gain, room ambience, treble tone, and boost amount all get dedicated rotary knobs so that any amp sound can be quickly dialed in. Speaker type, preset storage, and boost type all get three-position switches for extra flexibility. The dual footswitches default to on/off and preset switching, while further footswitch modes are available with the UAFX Control app.
Sophisticated I/O
The Woodrow '55 provides users with an elegant and efficient I/O arrangement to enable plenty of options right out of the box. One mono input and one mono output are provided for basic use, while a secondary input and output are also provided for stereo linking. A multitude of connection combinations are possible, from sending stereo outs to an interface or stage PA, to sending separate outs to different amps and effects loops, even more options are unlocked when using multiple Woodrow '55 pedals in tandem. 4-Cable mode, compatible only with UAFX amp pedals, allows the addition of another switchable channel to any real guitar amplifier with an effects loop, allowing you to switch between your guitar amp's built-in preamp section and the sounds in your pedals.
Built to Last
Featuring the timeless design and rugged craftmanship that UA has become known for, the Woodrow '55 pedal is built to last decades. Whether taken on the road or used in the studio, this pedal can be relied upon to deliver quality sound on demand.

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