Plug your guitar into the Woodrow '55 and choose from numerous legendary mic/speaker pairings, boosts, and amp models, including popular hot-rod options, with more available for download. Featuring built-in mic and speaker pairings derived from the OX Amp Top Box, everything from pristine cleans, to rich overdrive, to lo-fi grunge can be easily attained, while classic boost circuits and controllable room ambience can unleash a universe of possibilities. Whether you are looking to get out in front of your amp or simply add some American tweed tube growl to your guitar sound, the Woodrow '55 amplifier pedal delivers expressive, album-ready studio tones at the flip of a switch.

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.
From Dapper to Dangerous, in Seconds
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.
UAFX Mobile App
Want to just control all of the Woodrow '55 features without having to bend over and adjust any knobs? UAD has you covered with a handy Bluetooth pairing function that allows you to alter any available parameter directly from your favorite mobile device through the UAFX Control mobile app. Customize features, explore presets, or even download new tones, models, and artist presets all with a few taps. You can even get deep and customize your footswitches for a wide array of functions.
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.

Inputs / Outputs
USB I/O 1 x USB Type-C Female Input
Audio I/O 2 x 1/4" TS Hi-Z/Instrument Input (Input 2 for Stereo)
2 x 1/4" TS Hi-Z/Instrument Output (Output 2 for Stereo)
Input Impedances Mono In: 500 Kilohms Stereo In: 1 Megohms
Output Impedance 500 Ohms
Maximum Input Level 12.2 dBu
Maximum Output Level 12.1 dBu
Frequency Response ± 3dB 20 Hz to 20 kHz
Wireless
Bluetooth 5.0
Bluetooth Frequency 2.400 GHz to 2.4835 GHz
Power
Power Source AC Adapter with Power Brick (Not Included)
DC Input Power 9 VDC at 0.4 A
Environmental
Certifications FCC-B, IC, Kcc, as per Manufacturer
Physical
Color Silver
Dimensions 5.55 x 3.62 x 2.56" / 14.1 x 9.19 x 6.5 cm (With Knobs and Protrusions)
Weight 1.24 lb / 0.56 kg