Universal Audio UAFX Woodrow '55 Instrument Amplifier

A Dive into the DNA of 1950s American Combos

The UAFX Woodrow '55 draws inspiration from the organic response and raw tone of mid-1950s American tube combos, those "tweed" amps that have become an absolute reference for their dynamics and character. It captures that "living" guitar feel that instantly shifts from clean to crunch, then to a grittier distortion when playing harder or pushing the gain. This sonic heritage, popularized by artists like the Eagles, Chuck Berry, and Neil Young, is captured here in a pedal designed to replace a traditional amp setup or complement a modern pedalboard.

Who the Woodrow '55 Is For: From Minimalist Pedalboards to Full Front-of-House Rigs

This pedal is aimed at guitarists who want the comfort of a realistic amp sound without hauling a combo and a mic. Live, it is especially suited for direct-to-console setups (or to an interface), offering a stereo image and a sense of space thanks to room modeling. In the studio, it quickly delivers a credible "tweed" tone for clean and inspiring takes without the need for traditional mic'ing.
Style-wise, it excels in blues, vintage rock, americana, country, indie, and anything that demands a snappy clean, a tight crunch, and expressive saturation. Beginners will appreciate the ease of access (a "good sound" very quickly), while advanced players will find a nuanced playing response and true amp/cab/mic coherence for stacking drive, modulation, or delay effects.

Controls, Modes, and Customization: An Amp Platform in a Pedal

The Woodrow '55 combines an amp section and a stereo cabinet/mic section, with room modeling to add depth and avoid the "too dry" direct sound. The Live and Preset modes make it easy to switch from immediate stage use to a sound recall workflow. If you prefer to keep your amp and cab, you can bypass the cabinet/mic emulation and use the pedal upfront to add preamp coloration and extra saturated tones.
For further customization, the pedal offers modifications via boosts and additional speaker and cabinet options, with a "stock amp" versus "modified amp" approach. Among the boost colors are references to iconic preamps (digital rack-style) and tape preamps, useful for thickening the attack, tightening the low end, and bringing out mids in a mix. Finally, the UAFX Control mobile app opens the door to footswitch customization, preset archiving and recall, as well as downloading additional content and artist presets.

The Sound

The Woodrow '55's sonic character is defined by a snappy attack, open highs, and a singing midrange typical of "tweed" combos. In clean mode, the sound remains articulate, with a pleasant natural compression under the fingers. In crunch, the pedal reveals a granular and expressive saturation, highly sensitive to guitar volume and playing intensity. Pushed further, it delivers a rougher distortion, ideal for rock riffs and vintage-grain leads.
Cabinet and speaker options (including 12-inch models for the combo, as well as additional cabinet alternatives via the UAFX ecosystem) allow you to tailor the overall personality: more "chimey" and airy, tighter and woody, or more aggressive and dense. The stereo output combined with the room modeling provides a natural width especially effective with delays and reverbs, while maintaining a credible and focused amp foundation.

Technical specifications

Effects	Preamp, Amp Simulator	Type	sector
Technology	Digital	Use	electric guitar
Format	Pedal	Color	Orange
EQ	Tone

Inputs	2 unbalanced TS 6.35mm jacks (right input for stereo connections and 4-cable mode)	Height	6.5 cm
Outputs	2 unbalanced TS 6.35mm jacks (right output for stereo connections and 4-cable mode)	Width	9.2 cm
Required power	9 V DC shielded, center negative	Depth	14.1 cm
Minimum current required	400 mA	Weight	0.567 kg