The New Fractal VP4

Legendary Fractal Audio Effects in an Easy-To-Use Floor Unit

The VP4 is a powerful, compact VIRTUAL PEDALBOARD processor. It provides four simultaneous effects with a user-friendly experience inspired by traditional guitar pedals. The effects are based on the award-winning Axe-Fx III, with 400+ classic stompbox and studio effects to choose from, including drives, delays, reverbs, choruses, flangers, phasers, pitch, plex, EQs, compressors, wah, tremolo, and many more.

Your Amp’s Best Friend

The VP4 is designed to work seamlessly with a traditional amplifier and also excels at providing pre- and/or post-effects with any modeler. Now you can choose your ideal setup and still enjoy Fractal Audio’s legendary effects, vetted by the world’s greatest guitar heroes.

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Pure amp feel

VP4 slips into any rig - front input, effects loop, or full 4-CM - and preserves the touch and dynamics that make your amp sing.

400+ legendary Fractal effects

Drives, compression, modulation, delay, reverb and more from the Axe-Fx III library - push your amp with the highest quality effects.

Pedalboard-simple, flagship power

Four silent footswitches and dedicated knobs offer instant control while top-tier Fractal DSP handles the heavy lifting.

Fits every instrument

Electric guitar, bass, acoustic, even synth - the VP4 adapts instantly and makes every rig shine.

Stage-ready at a touch

Engage Gig Mode for dialled-in scenes and total immersion in the moment.

Road-ready chassis

Steel enclosure, recessed connectors and pop-suppressed power built to survive nightly stages and long travel.

User-Experience

Overview

I/O

Introduction

FXs

Summary

Videos

VP4 Edit

Inputs & Outputs VP4

The VP4 slots effortlessly in front of a tube amp, inside a 4-cable loop, after a modern modeller or straight into a studio desk. Premium instrument/line analogue I/O is paired with fixed-clock 48 kHz S/PDIF, a class-compliant 24-bit/48 kHz USB-C audio/MIDI interface and space-saving 3.5 mm TRS MIDI. Two freely assignable pedal jacks accept expression pedals or single switches. Four-cable method, straight loop return or pure digital workflow—all cabling is quick and self-explanatory. Robust, logically grouped sockets survive the road, while IN/OUT CLIP LEDs and an auto-switching 0–18 dB input pad keep levels in check. Power comes from the included 9 V DC/1.3 A supply with pop-suppression for silent start-ups.

The Four Cable Method, or "4CM," allows you to run two separate mono signal paths through the VP4: one between your guitar and amp for "PRE" effects like wah or drive, and a second through your amp's FX loop for "POST" effects like delay and reverb, which can sound clearer and more defined in this position.

1. INPUT L/Mono

Main input for guitar, bass or line sources; entry point for “Pre-FX” in 4-cable setups. Adjustable 0–18 dB pad with IN CLIP warning.

2. INPUT R

Second input for true stereo sources or an amp’s FX-Send in 4CM. Leave unused for mono.

3. OUTPUT L/Mono

Unity-gain out to the amp input or loop return; OUT CLIP LED shows headroom.

4. OUTPUT R

Second out for stereo rigs, monitors or the “Post-FX” path in 4CM.

5. PEDAL 1

¼″ TRS for an expression pedal or momentary/latching switch; fully assignable in SETUP › Pedals.

6. PEDAL 2

Same again for extra real-time control (volume, wah, tap-tempo, kill-switch, etc.).

7. SPDIF IN/OUT

24-bit I/O at fixed 48 kHz; output mirrors the analogue outs, input selectable (Input Source = Digital). Coax cable included.

8. USB-C

Class-compliant 2 × 2 audio interface (24-bit/48 kHz) with MIDI-over-USB for VP4-Edit, DAW tracking and firmware updates.

9. MIDI IN

3.5 mm TRS; 5-pin DIN adapter supplied. Receives program- and control-change from controllers or DAW.

10. MIDI OUT

3.5 mm TRS. Sends VP4 data.

11. POWER (9V DC)

With pop-suppression; use the included supply.

DIMENSIONS: Width: 254 mm Depth: 160 mm Weight: 1.56 kg

INPUT L / Mono – Main input for guitar, bass or line sources; entry point for “Pre-FX” in 4-cable setups. Adjustable 0–18 dB pad with IN CLIP warning.
INPUT R – Second input for true stereo sources or an amp’s FX-Send in 4CM. Leave unused for mono.
OUTPUT L / Mono – Unity-gain out to the amp input or loop return; OUT CLIP LED shows headroom.
OUTPUT R – Second out for stereo rigs, monitors or the “Post-FX” path in 4CM.
PEDAL 1 – ¼″ TRS for an expression pedal or momentary/latching switch; fully assignable in SETUP › Pedals.
PEDAL 2 – Same again for extra real-time control (volume, wah, tap-tempo, kill-switch, etc.).
S/PDIF IN / OUT – 24-bit I/O at fixed 48 kHz; output mirrors the analogue outs, input selectable (Input Source = Digital). Coax cable included.
USB-C – Class-compliant 2 × 2 audio interface (24-bit/48 kHz) with MIDI-over-USB for VP4-Edit, DAW tracking and firmware updates.
MIDI IN – 3.5 mm TRS; 5-pin DIN adapter supplied. Receives program- and control-change from controllers or DAW.
MIDI OUT – 3.5 mm TRS. Sends VP4 data.
POWER 9 V DC / 1.3 A – With pop-suppression; use the included supply.

4CM with the VP4

Introducing the VP4 Virtual Pedalboard

Multi-FX, minus the clutter

Your sound, your stage, your control.

The VP4 is more than a multi-effects box—it’s a creative partner that lifts your music to the next level. Its compact footprint replaces an entire pedalboard while staying as intuitive as a single stomp. From club gigs to world-class studios, the VP4 sets a new standard.

Complete your pedalboard

Your tone world, always in step with your ideas.

Stop chasing the perfect sound—find it. The VP4 packs premium drives, reverbs and delays so precise your audience will notice instantly. Expect depth, expression and huge dynamic range, exactly the way you imagined.

Built-in audio interface

Capture ideas in true studio quality.

Just connect USB and record at pristine 24-bit/48 kHz. No extra hardware, no tricky routing—pure efficiency in the studio or rehearsal room.

Your best friend onstage

A device that keeps the spotlight on the music.

Every second onstage counts. Gig Mode switches presets, scenes and effects with four footswitches—so you stay in the moment and leave the stage knowing you nailed it.

Studio-grade time effects

Sound that lives beyond the moment.

Warm tape echoes, crystal-clean reverbs, subtle modulations—the VP4’s time-based effects fill any room and move your audience. Every note blooms with clarity and depth.

Master bass & synth like never before

Freedom for every instrument.

The VP4 isn’t just for electric guitar. Acoustic, bass and synth all shine through its versatile engine. From gentle EQ tweaks to bold real-time modulations, your instrument gains new brilliance and character.

Flexible, high-quality I/O

Seamless integration in any rig.

Mono, stereo, MIDI, USB or S/PDIF—the VP4 adapts instantly. Use the four-cable method to place effects before or after your amp and craft a true signature sound, onstage or in the studio.

Expression-pedal ready

Real-time effects, no limits.

Hook up two expression pedals for wah, volume and more. Auto-Engage activates the effect only when needed, disappearing the moment you step off—adding life and dynamics to every performance.

VP4-Edit

Perfect your tone with ease.

The free VP4-Edit software puts every parameter at your fingertips. Shape effects, presets and routing, then save them for your next gig or session—fast, simple, intuitive.

Played by pros, loved by you

Join the best.

Top musicians trust Fractal Audio, and the VP4 is no exception. It delivers uncompromising tone in the studio and before tens of thousands of fans. Step up to limitless sound.

The Legacy of Fractal Audio Effects

The VP4 features over 400 effects based on those of the award-winning Axe-Fx III. Each block contains multiple effect types. For example, there are 69 different Drive pedal emulations, 78 different reverbs, 16 compressors, and 128+ different delay effects between Delay, Multitap Delay, Plex Delay, and Megatap Delay.

Summary of VP4 Features

Uncompromising Sound Quality: True to Fractal Audio’s reputation, the VP4 delivers pristine sound quality, and is suitable for use on the world’s finest stages and studios.
Four Footswitches: Classic ON/OFF switching makes it easy and intuitive to use the VP4 like four traditional pedals. Meanwhile, the factory default “Gig Mode” switching system places Presets, Scenes, Effects, Channels, Tuner, and Tap Tempo right at your feet.
104 Presets: Each preset is like a complete pedalboard with your choice of four effects. This flexibility allows a single VP4 to replace an entire collection of other effects. Additionally, each preset has its own Noise Gate, Master EQ/levels, and more.
Expression Pedal Compatibility: Connect up to two expression pedals or switches for real-time control of effect settings. The Fractal Audio EV-1 and EV-2 are perfect choices!
Accurate Tuner: The VP4 includes a dedicated large display tuner mode, plus a handy “mini-tuner” that’s always visible. It uses our latest pitch detector from the Axe-Fx III.
Flexible, High-Quality Connectivity: Mono/stereo analog I/O, with unity gain an ultra-low noise floor, “4CM Mode” allows you to divide effects in front of your amp and in its loop. Plus: buffered analog bypass, SPDIF digital I/O, MIDI I/O, and USB audio/MIDI capabilities.
Max out your Modeler:The VP4 is designed to work seamlessly with a traditional amplifier and also excels at providing pre- or post-effects with any modeler. Now you can choose every element in your rig and still enjoy Fractal Audio’s vast inventory of effects, vetted by the world’s greatest guitar heroes.
Beyond the Basics: For those who want to go beyond a basic pedalboard, the VP4 supports Scenes, Channels, Modifiers, Controllers, and more for a highly customizable experience.
VP4-Edit: Customize your VP4 with VP4-Edit, a free companion software editor and librarian.
Upgradeable Firmware: Like every Fractal Audio processor, the VP4 features upgradeable firmware, ensuring that you can enjoy free updates with new features and improvements.

VP4 Videos

Fractal VP4 Virtual Pedalboard

The VP4 pairs hands-on simplicity with serious horsepower, giving musicians a premium, go-anywhere effects platform. Its pristine signal path and tour-ready build pack top-tier multi-FX processing into a compact footprint - ready to push your sound to the next level.

Perfect for electric and acoustic guitar, bass, keyboards, and more.