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Amp ONE
What Amp ONE is
Amp ONE is a free iPad application for real-time guitar preamp and cabinet simulation, with effects for playing. It uses pretrained artificial neural network models in place of an algorithm for solving nonlinear differential equations in its circuit simulations. Listed preamp models include Marshall JCM800, Cornford Harlequin, Engl E530, Krank Krankenstein and Revolution, an American hi-gain amp, EVH 5150 III, and Fender Blues Junior III. The power amp stage is modeled as part of the guitar cabinet through convolution. Effects include a noise gate with adjustable thresholds, attack and release, and fade timings that can create a swell effect; four chorus models; delay; and reverb. Snapshot and preset systems save and restore all settings or selected sections. Amp ONE supports AudioBus and Inter-App Audio. An external audio interface is required to connect a guitar to an iPad. The stated requirements are Apple iPad 2 or later and iOS 7.1 or later. The App Store listing says it is designed for iPad and is not verified for macOS. Apple’s listing says the developer has not provided details about privacy practices and data handling.
Who it suits
Amp ONE suits guitarists looking for modeled amplification and effects on an iPad. It requires an external audio interface to connect a guitar.
What it does well
- Free app designed for iPad.
- Preamp models include Marshall, Fender, and EVH.
- Noise gate includes adjustable swell timing.
- Four listed chorus models, plus delay and reverb.
- Presets can save all or selected settings.
What to know first
- Requires an external audio interface for guitar input.
- Not verified for macOS.
- Developer has not provided privacy-practice details.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Amp ONE | App Store listing says “Free”; designed for iPad | Free |
As mercuriall.com lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Mercuriall website at https://mercuriall.com/cms/.
- Get Amp ONE through its free App Store listing.
- Use an Apple iPad 2 or later running iOS 7.1 or later.
- Connect a guitar to the iPad through an external audio interface.
- Use AudioBus or Inter-App Audio if integrating it with other apps.
Verdict
Amp ONE offers modeled preamps, cabinet simulation, and effects in an iPad app with preset and snapshot support. Check the audio-interface requirement and the limited privacy details in the App Store listing.
Questions
How much does Amp ONE cost?
The listed plan is free, and the App Store listing says “Free.”
Which devices can run Amp ONE?
The stated requirements are Apple iPad 2 or later and iOS 7.1 or later. The App Store listing says the app is designed for iPad and is not verified for macOS.
Can I connect a guitar directly to the iPad?
The maker specifies an external audio interface to connect a guitar to an iPad.
Which integrations does Amp ONE support?
The maker lists AudioBus and Inter-App Audio support.
Who publishes Amp ONE?
Mercuriall's site identifies the publisher as Mercuriall Audio Software.
Facts from Amp ONE's own pages
- App Store platform note
- The App Store listing says the app is designed for iPad and is not verified for macOS. · apps.apple.com, 9 Oct 2026
- Audio connection
- An external audio interface is required to connect a guitar to iPad. · mercuriall.com, 9 Oct 2026
- Cabinet
- The power amplifier stage is modeled as part of a guitar cabinet through convolution. · mercuriall.com, 9 Oct 2026
- Cabinet modeling
- The power amp stage is modeled as part of the guitar cabinet through convolution. · mercuriall.com, 9 Oct 2026
- Chorus
- Four chorus models are listed: Roland JUNO-60, Roland Dimension D, Korg Triton, and VOX Stereo Chorus. · mercuriall.com, 9 Oct 2026
- Compatibility
- The stated system requirements are Apple iPad 2 or later and iOS 7.1 or later. · mercuriall.com, 9 Oct 2026
- Effects
- The app includes a noise gate and swell, four stereo chorus models, delay, and reverb. · mercuriall.com, 9 Oct 2026
- Hardware requirement
- The maker specifies an external audio interface to connect a guitar to an iPad. · mercuriall.com, 9 Oct 2026
- Integration
- The maker describes Amp ONE as an inter-app-audio application; its overview also lists AudioBus and InterApplicationAudio support. · mercuriall.com, 9 Oct 2026
- Integrations
- The maker lists AudioBus and Inter-App Audio support. · mercuriall.com, 9 Oct 2026
- Intended use
- The maker describes Amp ONE as a portable option for guitarists to play through modeled amplification without a large, noisy computer. · mercuriall.com, 9 Oct 2026
- Maker attribution
- Mercuriall's site identifies the publisher as Mercuriall Audio Software. · mercuriall.com, 9 Oct 2026
- Modeling
- Its maker says Amp ONE uses pre-trained artificial neural network models to speed up electrical circuit simulation. · mercuriall.com, 9 Oct 2026
- Modeling method
- Amp ONE uses pretrained artificial neural network models in place of an algorithm for solving nonlinear differential equations in its circuit simulations. · mercuriall.com, 9 Oct 2026
- Noise gate
- The noise gate has adjustable opening and closing thresholds, attack and release, and fade-in and fade-out timings; the page says it can create a swell effect. · mercuriall.com, 9 Oct 2026
- Operating system
- The maker lists Apple iPad 2 or later and iOS 7.1 or later as system requirements. · mercuriall.com, 9 Oct 2026
- Other effects
- The page lists delay and reverb sections. · mercuriall.com, 9 Oct 2026
- Preamp models
- Listed preamp circuits include Marshall JCM800, Cornford Harlequin, Engl E530, Krank Krankenstein and Revolution, an American hi-gain amp, EVH 5150 III, and Fender Blues Junior III. · mercuriall.com, 9 Oct 2026
- Preamps
- The maker lists modeled preamps including Marshall JCM800, Cornford Harlequin, Engl E530, Krank, EVH 5150 III, and Fender Blues Junior III. · mercuriall.com, 9 Oct 2026
- Presets
- Snapshot and preset systems save and restore all settings or settings for selected sections. · mercuriall.com, 9 Oct 2026
- Privacy
- Apple's listing says the developer has not provided details about the app's privacy practices and data handling. · apps.apple.com, 9 Oct 2026
- Product function
- It turns an iPad into a guitar tube preamp and cabinet with effects for real-time playing. · mercuriall.com, 9 Oct 2026
- Purpose
- Amp ONE is an inter-app-audio application for real-time preamp simulation on iPad. · mercuriall.com, 9 Oct 2026
Where Amp ONE stands on Freedom251
- Guitar Amp Software#6 of 35