
Fractal Audio AM4 Compact Amp Modeler & Multi-FX for Electric Guitar
The AM4 Amp Modeler brings the core sound and technology of Fractal Audio’s top-tier processors to our most portable unit yet. Built on the same industry-leading amp modeling algorithms found in the Axe-Fx III, it delivers authentic tube amp tone and feel, advanced speaker cab sims, and world-class effects in a rugged, pedalboard-ready design. With pro I/O, four channels per preset, gapless switching, and free AM4-Edit software, it’s a powerful platform for stage, studio, and everyday playing.
Key Highlights
Our Best Modeling Engine: Industry-leading amp modeling derived from the Axe-Fx III, using the same component-level physical modeling approach where tubes, transformers, tone stack, power supply and more are individually modeled for authentic behavior and interaction. Delivers accurate amp tone and feel, and continuous refinement through future firmware updates.
Speaker Simulation: Integrated directly in the amp block, the cab section features 45+ DynaCab™ models featuring real-time visual mic positioning, plus full support for UltraRes™ and standard User Cabs. Add built-in stereo room ambience without requiring a separate block.
Effects Library: A suite of stompbox and studio effects powered by the same algorithms as the Axe-Fx III, including 80+ drive models, 75+ reverbs, dozens of delays, and 150+ types across modulation, dynamics, filters, EQ, wah, and more.
Presets, Scenes, Channels: 104 presets, each a complete mini-rig with four blocks, four scenes, and four channels per block. Gapless switching ensures seamless transitions between sounds.
USB Audio: 4×4 USB audio interface for recording, playback, DI capture, and re-amping through the AM4.
Pro I/O & Connectivity: Low-noise instrument input with Auto-Z impedance switching, balanced TRS main outputs, stereo insert loop for external effects, S/PDIF I/O, MIDI, dual expression pedal inputs, and a dedicated high-quality headphone output.
Foot Control: Four onboard footswitches with five modes: Presets, Scenes, Effects, Tune/Tempo, and Amp Mode with one-tap output boost.
Build / Chassis: Compact, rugged steel enclosure designed for pedalboard, desktop, or standalone use.
AM4-Edit: AM4-Edit for Mac/PC with visual preset building, cab management, block libraries, controller setup, and integrated Fractal-Bot.
Firmware Updates: Free firmware updates add amps, effects, improvements, and new features over time.
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Fractal Audio AM4 Compact Amp Modeler & Multi-FX for Electric Guitar
Purchase Information
Please read our FAQs page to find out more.
Refund/returning items
We do not accept order changes after the confirmation and payment of your order. After your product is delivered, Refunds are only possible if it is caused by our error (damaged/defective product, or incorrect item, etc.). To help us ascertain if your refund request is possible, please provide us with specific reasons for your refund request (reasons supported with photos where possible) via email to: enquiry@davisguitar.com – Please include your address too.
If the refund/return is approved, we shall provide you with an address for you to post the items you wish to return to. Please have the items in proper packaging and mail it back to the address we provide strictly within 2 days from receiving your items. The length of time your Refund in transit is beyond our control, your bank or credit card company may require additional period of time to process your refund and for the refund to be reflected in your account.
Shipping partners
- GrabExpress/LalaMove (Singapore only, same day delivery)
- FedEx Priority (International Orders)
Delivery typically in 1 to 3 business days to select markets in Asia, 3 to 5 business days to United States, Canada and Europe.
Taxes & Duties
The payment of duties and taxes are typically the responsibility of the receiver (International Deliveries).
Overseas shipping time and cost
Overseas shipping cost varies by buyer location and the item’s size and weight. Kindly contact enquiry@davisguitar.com for a shipping quote prior making a purchase.

