# BIAS AMP 2 - for iPhone — Ultimate Virtual Amp Designer

> Professional virtual amplifier designer for creating and sharing custom guitar amp sounds. (iPhone/iPad app by Positive Grid Inc.)

- Source: https://appshunter.io/ios/app/bias-amp-2-for-iphone/id807996795 (this page in markdown: same URL + `.md`)
- Developer: [Positive Grid Inc](https://appshunter.io/developer/751979910)
- Category: Music, Entertainment
- Price: Free with in-app purchases
- Rating: 4.40/5 from 651 App Store ratings · 190 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 633 MB
- Languages: American English
- Released: 2014-02-20
- Data updated: 2026-08-31
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/bias-amp-2-for-iphone/id807996795/reviews.md

## What is BIAS AMP 2?

BIAS AMP 2 Mobile is a professional virtual amp designer that offers replications of 36 of the best vintage, modern and boutique amps in rock. The app gives you the power to create new sounds by designing your own dream amplifier, letting you swap out tubes, preamps, power amps, transformers, tone stacks, cab, and microphones, all via a powerful and intuitive interface designed for your iPhone. Whether you’re a classic rocker, metalhead, jazz player, bluesman or singer-songwriter - and whether you understand how amplifier electronics work or not - you’ll be dialing in killer and exclusive tones in a heartbeat. 

BIAS AMP 2 Mobile adds a host of new features, including a powerful new user interface, new preamp and power amp tubes, tone stacks, Blues and Bass amp packs, new Dynamic Tone Control, new speaker cabinet module with multi-mic capability and open/closed back cabinet emulation and much more. In addition to all of these amazing new features, we’ve also partnered with legendary Celestion to create brand new custom multi-mic speaker cabs using their famed impulse responses! (Additional preamp, power amp and cab models are available via in-app purchase)

BIAS AMP 2 Mobile seamlessly integrates with Positive Grid’s ToneCloud®, which is far more than a simple storage tank for your own custom tones - it’s an active community where thousands of guitarists upload, share and discuss tones. The ToneCloud® gives you access to thousands of custom amps created by artists, recording studios and guitarists like you, so you’ll never lack for sonic inspiration.

To take your tones to the next level, there are 9 full-featured reverbs in BIAS AMP 2 Mobile. These aren’t just simple two-knob reverbs either - they range from lush halls and chambers to intimate rooms, and each reverb has control of decay time, mix level, high and low cut filters, damping and dwell. 

BIAS AMP 2 Mobile integrates seamlessly with Positive Grid's BIAS FX and JamUp guitar multi-effects app, expanding BIAS AMP 2 Mobile into a powerful and completely unified professional guitar system for live use, recording and jamming. Both JamUp and JamUp Pro include effects processors, Jam player, 8-track recorder and phrase sampler, tuner and metronome, effectively turning BIAS AMP 2 Mobile into a recording studio and top-of-the-line practice utility. 

BIAS AMP 2 Mobile also works with GarageBand and other audio apps using iOS’s Inter-App Audio and Audiobus. Whether you’re recording, writing songs or honing your chops—at home or on the road—BIAS products place unequaled tone at your fingertips.

Features: 

    • Complete, accurate and versatile component-level amp modeling
    • 36 amp models included with the introductory release, with thousands more available via the ToneCloud®
    • Factory categories that allow you to organize amps by music genre and sonic impact (clean, blues, glassy, crunch, metal, acoustic, and bass)
    • Fully customizable preamps, tone stacks, power amps, transformers, cabinets, and mic selection and placement - mix and match!
    • Customize the look and feel of your amp panel by changing the name, tolex, front panel and knobs
    • Ability to work the way guitarists think: Tweak gain and overdrive, swap out tubes and transformers, change the cabinet and mic position and shape the tone with different tone stacks and two 8-band equalizers
    • Noise gate
    • 9 lush and full-featured reverbs
    • Create a virtually unlimited number of custom amps
    • Seamless integration with BIAS FX, JamUp and JamUp Pro; open and save your amp models inside BIAS FX and JamUp with one tap (available via in-app purchase)
    • Works with GarageBand and other audio apps via Inter-App Audio and Audiobus

Also check out BIAS AMP 2 for desktop machines (AAX/VST/AU) at: www.positivegrid.com

For more information, please visit: 
www.positivegrid.com 
Twitter: @PositiveGrid
facebook.com/positivegrid

## Key features

- Component-level amp modeling
- Design custom amplifiers
- Swap tubes, preamps, and cabinets
- Access ToneCloud community
- Multi-mic speaker cabinet emulation
- Integrated reverb effects

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| GlassyPack | $3.99 | one-time |
| CrunchPack | $3.99 | one-time |
| MetalPack | $3.99 | one-time |
| Bass Pack | $3.99 | one-time |
| Blues Pack | $3.99 | one-time |
| Celestion Modern Vintage Pack | $7.99 | one-time |
| Celestion Classic Pack | $7.99 | one-time |
| BIAS Amp 2.0 Features Pack | $6.99 | one-time |
| BIAS Amp 2.0 Features Pack | $7.99 | one-time |


## What do users think of BIAS AMP 2?

Overall sentiment: mixed

**Pros**

- 🚀 Awesome sounds
- 🚀 Highly customizable
- 🚀 Great for live use
- 👍 Realistic amp modeling
- 👍 Excellent support

**Cons**

- 🐛 Crashes and stability issues
- 🐛 Compatibility problems with iOS updates
- 💰 Have to pay twice for iPhone and iPad versions
- 💰 Expensive in-app purchases

**Commonly reported bugs**

- Annoying static/feedback noises
- Amp match feature not working
- Unable to turn off cab simulation
- Wireless headphone connectivity issues

**Most requested features**

- Add metronome
- Improve inter-app audio support
- Implement AUv3 support
- Allow restoring purchases across devices
- Increase interface size for iPhone

## Recent user reviews (10 of 190)

All indexed reviews: https://appshunter.io/ios/app/bias-amp-2-for-iphone/id807996795/reviews.md

### 5/5 — Awesome thanks

*2025-02-01*

Input output to be a little hot, but it’s got incredible sounds it works same work really good and I hope the future this gets better thanks

### 1/5 — Outdated

*2024-12-28*

There is a bug on interface. Its screen doesn’t fitting correctly with iPhone 15/16 series’ screen. 

Some buttons are above other buttons on different sessions. The right side of ToneCloud session is not being used totally when I search for amps created by community. There should be 3 columns instead 2 to present the community presets.

The right side on my profile session is not adapting correctly with my screen. Even if I turn to the side that doesn't have Dynamic Island, some infos doesn’t appears totally.

### 1/5 — Not working.

*2024-12-26*

Ever since I downloaded and bought Bias Fx 2 pro package software I wanted to get creative with the amp building I downloaded this add-on for it and it is completely messed up and does not work. All it does is give me an annoying feedback sound as soon as I turn a knob or try to do anything. I'm using the Irig2 which has no problem when I load up Bias fx2 and works perfectly. I hope this gets updated which probably won't but hopefully it does.

### 5/5 — All you need

*2024-12-22*

Reverb is included and the sounds you can get from this app are just awesome. From clean to metal. Everything in a pretty box.

### 1/5 — Used to be amazing. Completely broken now.

*2024-11-03*

The app just simply refuses to work. The output is just emitting a really annoying static noise. At best if you unplug your gear and plug it back in, you hear your guitar clean, but with an undercurrent of static. You know, for flavor. Oh by the way, this doesn’t change no matter what amp you select. 

I tried uninstalling/reinstalling and same thing. Nothing fixes it. Been like this for years now. Not like they care, they already have your money. If you’re looking for a good mobile amp, look elsewhere.

### 1/5 — Completely broken

*2024-08-30*

I used to use this to record on GarageBand on my old iPhone all the time and it had the best sound quality my iRig2 could handle. I got a new phone and this app just doesn’t work anymore. None of the presets do anything and the base clean amp has what I can only describe as a horrible static feedback every time I strum. No matter what I do in the settings in the app and on the iRig2, it will not go away. The only setting in the app that seems to do anything just makes the static worse. Even better, I tried downloading biasfx2 to see if it would fix anything and an error keeps popping up saying I can’t download it. I’m completely disappointed because I used to really enjoy using this app to record music. If anyone is trying to find a decent plug in app, just stick to Tonebridge.

### 5/5 — Problemas com o JamUp Pro e Bias AMP 2

*2024-05-01*

Estou usando um IPhone 11, com a última versão do IOS, com o primeiro Irig lançado e adaptador Lightning.
Mas só está saindo o som da guitarra limpa com algum ruído, alterno entre os preset e nada muda.
Me ajudem!

### 1/5 — Complete Waste of Time

*2024-01-02*

I used to use bias amp all the time it’s very useful sounds get and is honestly a good learning tool when you can recreate the tones you hear other people use when trying to train your ear, but one day I just got on and it kept closing out the app eventually I deleted it and redownloaded it and everytime I open it nothing will work I can select Amps and effects but nothing goes through it’s just a broken weak signal whilst bias FX 2 works fine I just wish it would’ve continued to work the way it used to.

### 1/5 — No Apple Silicon

*2023-10-05*

Pls make Bias products work natively on Mac Apple Silicon. M1 is around the corner for 3 years already...

### 1/5 — No AUV3, no inter-app audio

*2023-09-07, version 2.1.15*

Sure it says it has inter-app audio. Didn’t work with Cubasis 3 or Garageband. Doesn’t even load in GB, claiming it’s “unavailable.” So now I’m not convinced it would work probably even if it did have AUV3 support, which for some reason it doesn’t in 2023.

## Frequently asked questions about BIAS AMP 2

### What does BIAS AMP 2 do?

BIAS AMP 2 is a professional virtual amp designer that allows you to replicate existing amplifiers or design your own from scratch. You can customize components like tubes, preamps, and cabinets to create unique guitar tones.

### What are the key features of BIAS AMP 2?

Key features include component-level amp modeling, the ability to design custom amplifiers by swapping parts, multi-mic speaker cabinet emulation, integrated reverb effects, and access to the ToneCloud community for sharing and discovering tones.

### How much does BIAS AMP 2 cost?

The app is free to download and includes 36 amp models. Additional amp packs, preamps, power amps, and cab models are available via in-app purchase, offering a freemium model.

### What devices is BIAS AMP 2 compatible with?

BIAS AMP 2 is designed for iPhone. It also integrates with other audio apps on iOS using Inter-App Audio and Audiobus, and works with GarageBand.

### Who is BIAS AMP 2 for?

This app is for guitarists of all levels, from classic rockers to metalheads and blues players, who want to explore, create, and dial in killer amp tones for recording, practicing, or live performance.

## Version history (last 5 releases)

### 2.1.15 — 2023-06-21

- Fixed issue with inability to open using IAA.
- Minor bugs fixed.

### 2.1.14 — 2022-11-04

Fixed the output clipping noise issue

### 2.1.13 — 2021-03-30

Hi there,


This update contains the following changes:

- Fixed an issue with Audiobus connection on iOS 14


Rock on,

The Positive Grid Team

### 2.1.12 — 2020-11-19

Hi there,

This update is for fixing the crash issue when opening the app from background mode

Rock on,
The Positive Grid Team

### 2.1.11 — 2020-05-20

Hi there,

This latest version includes the updates below:
- Update DSP engine to r2244
- BIAS FX 2 Mobile integration

Rock on,
The Positive Grid Team

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## More apps by Positive Grid Inc

- [JamUp](https://appshunter.io/ios/app/jamup/id449820506)
- [JamUp Pro](https://appshunter.io/ios/app/jamup-pro/id454702113)
- [BIAS AMP 2 - for iPad](https://appshunter.io/ios/app/bias-amp-2-for-ipad/id711314889)
- [BT Bluetooth MIDI Pedal Editor](https://appshunter.io/ios/app/bt-bluetooth-midi-pedal-editor/id911674129)
- [BIAS FX - Guitar Amp & Effects](https://appshunter.io/ios/app/bias-fx-guitar-amp-and-effects/id937685528)

All apps by Positive Grid Inc: https://appshunter.io/developer/751979910

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*