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Multi-Effects · Fractal

Fractal AM4

The Fractal AM4 is a compact multi-effects unit that brings the amp modeling algorithms from Fractal's flagship Axe-Fx III into a four-switch pedalboard format, offering over 240 amp models and 150 effects. Guitar World's reviewer gave it 4.5 out of 5 stars, praising the amp modeling quality and extensive effects selection while noting it requires some tweaking and has a steeper learning curve than competing units.

  • 9V DC · center −
  • 1500 mA
  • Stereo
  • MIDI
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The rundown

Highlights

  • 240+ amp models and 150+ effects in a compact four-switch format
  • Uses Cygnus X-3 amp modeling from the Axe-Fx III
  • Stereo I/O, MIDI support, and expression pedal input
  • Runs on 9V DC with 1500 mA draw
  • Guitar World noted the price point as competitive within Fractal's lineup

Best for

Guitarists who want professional-grade amp and effects modeling in a compact pedalboard format and are willing to invest time in learning the interface.

Professional reviews

What the press rated it. We link to each review; read the full piece for the details.

Quick facts

Power
9V DC
Current draw
1500 mA
Polarity
Center negative
Weight
1616 g
Stereo
Yes
MIDI
Yes
Expression input
Yes
Year
2025
Status
In production

Where to buy Fractal AM4

$65.27 lowest new price · Reverb

Current offers
SellerConditionPriceLink
ReverbNew$65.27View

Prices last checked 20 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power supply does the AM4 need?

The Fractal AM4 requires a 9V DC power supply with 1500 mA current, using a center-negative connector.

Does the AM4 have stereo capability?

Yes, the Fractal AM4 features stereo I/O for stereo effects processing and output.

Can the AM4 be controlled with external devices?

Yes, the Fractal AM4 includes MIDI connectivity and an expression pedal input for external control.

How many switches does the AM4 have?

The Fractal AM4 has four footswitches for controlling parameters and effects.

Similar pedals

Same type, similar features.

Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.