The Behringer AM400 Ultra Acoustic Modeler is a modeling effect pedal built for electric guitar players who want an acoustic guitar sound from a solid-body instrument. RockBoard's PedalPedia describes it as a high-quality modeling pedal specially developed for that purpose, and it sits in the acoustic simulator corner of the wider field of Acoustic Pedals.1
What it does
The pedal's core is Behringer's Real Sound Modeling (RSM) technology, which the maker describes as combining state-of-the-art DSP technology with sophisticated algorithms to emulate real acoustic environments. In practice, that means the pedal processes the electric guitar signal to add the character of an acoustic body and a pickup, rather than simply applying EQ.1
The AM400 covers four simulation types, which Behringer describes as:
- Standard
- Large-resonant
- Brilliant
- Bright Piezo pick-up simulations
Together, RockBoard's PedalPedia says these let you create everything from a standard acoustic voice to a bright piezo pickup sound.1
Power and specifications
The AM400 runs on 9V DC, center negative, and draws 30mA of current. The pedal's circuit type is listed as analog.1
At 30mA, the AM400 is above what many low-draw pedals need, so it is worth checking the current budget of a daisy-chain supply before sharing power with it.
Where it sits
The AM400 is one of several acoustic simulators and acoustic-oriented pedals covered on Tonebox, alongside the Boss AC-3 Acoustic Simulator, the Mooer Acoustikar, the Hotone Omni AC Acoustic Simulator and Behringer's own V-TONE Acoustic Driver DI ADI21. Its RSM-based approach, with four distinct pickup-style simulations, is what the maker presents as its distinguishing feature.1
Videos
The Tone King
dancetech
PopMusicRu
Sources (1)
- AM400 Ultra Acoustic Modeler by Behringer, RockBoard PedalPedia, 2026
