Inspired by the legendary 2 x 12-inch combo amplifier that powered the British invasion, Universal Audio’s Woodrow ’55 perfectly captures the warm tube-style breakup tones of the king of ’50s tweed amplifiers! This pedal is an authentic end-to-end emulation of the classic ’50s 1 x 12-inch combo, sporting three different boost types to push the Woodrow ’55 into that throaty growl that defined rock ‘n’ roll overdrive tone for decades. Guitarists at Music Experience are amazed at how closely the Woodrow ’55 re-creates the sound of a hot tube amp recorded in a live room, and this lifelike quality comes courtesy of UA’s incredible mic, cab, and Dynamic Room Modeling technology. What's more, each pedal in the UAFX series allows you to bypass your amplifier's preamp when the pedal is engaged via the special "4-cable" mode, supercharging your amp with two additional channels. If you’re looking for even greater control, the Woodrow ’55 sports Bluetooth compatibility so you can connect to Universal Audio’s UAFX app for enhanced editing, access to artist presets, and more!

A trio of distinct amp styles

Woodrow ’55 comes loaded with three different boosts to push your sound into overdrive — from a raunchy ’50s-style wail to more modern, articulate tone.

Stock: In this mode, the boost is pure clean gain without any added distortion. When you start cranking the knob, the midrange and treble response kick in, with a reduced bass to prevent flubbing.

KP-3K: TIf you’re after clarity and high-end detail, this one’s for you! This boost brightens up your tone by borrowing the preamp design from a famous ’80s digital delay pedal.

EP-III: Thick, saturated, and warm — how does that sound? The EP-III boost is based on the tape echo of the same name, with plenty of gain and color on tap to add a delightfully vintage character to your tone.

Switch up your speakers

Part of the Woodrow ’55’s magic is found in the dead-on speaker/cab emulations, bolstered by Universal Audio’s Dynamic Room Modeling technology. The Woodrow ’55 comes loaded with three cab/mic/speaker settings, seamlessly matched to the three different amplifier modes. Guitarists looking to cover a wide sonic range will love experimenting with the different speaker and amp pairings; plus, when registering the Woodrow ’55 with Universal Audio, you get three more free cab sims to play with!

4-cable mode offers powerful channel switching

Each pedal in Universal Audio’s UAFX series features a special “4-cable” mode accessible via the UAFX Control app, allowing you to bypass your amp’s preamp when the pedal is engaged for incredibly realistic tube-style tones. By hooking your pedal up to both your effects loop send/return and the front of amp input, you can instantly switch between your amp’s stock tone and your UAFX pedal routed straight into the power amp, effectively adding two extra channels to your amplifier. What’s more, Universal Audio designed this feature with multiple pedal setups in mind — you can connect any number of UAFX pedals in this configuration for multi-channel madness!

More control with the UAFX app

Looking for greater control over your tone? The Woodrow '55 is Bluetooth compatible to pair with Universal Audio’s powerful UAFX app. In addition to giving you greatly enhanced editing options, UAFX also includes access to artist tones, custom presets, and more!

What Universal Audio Says...

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.

• Get the best emulation of a mid-'50s American tweed amp ever packed into a pedal
• Take world-class studio amp sound anywhere, complete with mic/speaker pairings and preamp boosts
• Go from dapper to dangerous with classic tube tones
• Download artist tones, customize features, explore presets, and more with UAFX mobile app

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.

Get Hot-Rodded Sounds

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 and hot‑rod mods under your chucks, docs, or crocs.

Customize your Sound with the UAFX App