# FabFilter Pro-MB — Multi-band compressor/expander

> Advanced multiband compressor/expander audio plug-in for music production. (iPhone/iPad app by FabFilter.)

- Source: https://appshunter.io/ios/app/fabfilter-pro-mb/id1468280455 (this page in markdown: same URL + `.md`)
- Developer: [FabFilter](https://appshunter.io/developer/421796789)
- Category: Music, Music
- Price: $39.99
- Rating: 4.75/5 from 20 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 5 MB
- Languages: English
- Released: 2019-06-21
- Data updated: 2026-07-05
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/fabfilter-pro-mb/id1468280455/reviews.md

## What is FabFilter Pro?

FabFilter Pro-MB is a versatile multiband dynamics plug-in featuring a uniquely optimized workflow: up to six compression/expansion bands can be placed freely anywhere in the spectrum. High-quality Linear Phase and Minimum Phase processing modes are available, as well as a newly developed Dynamic Phase mode that is even better, offering transparent sound without phase distortion while avoiding linear-phase pre-ringing artefacts.

The Pro-MB app filters the microphone input and plays it back in real-time. To use Pro-MB as a plug-in, you need an AUv3-compatible host app like Auria, AUM or Cubasis. Pro-MB will appear in the list of Audio Unit extensions for effect plug-ins in the host app.

Key features:

- Up to six processing bands, freely placed anywhere in the spectrum
- Bands can be easily snapped together to form a traditional crossover system
- Unique Dynamic Phase processing mode featuring zero latency, no static phase changes and no pre-ringing artifacts
- Excellent Linear Phase processing mode, eliminating audible artifacts when quickly changing crossover frequencies
- Minimum Phase processing mode
- Handles any form of dynamics processing, from highly transparent compression, limiting and expansion to pumping upward compression and punchy gating
- Fully customizable per band: threshold, range, attack, release, output gain, ratio, variable knee, lookahead (up to 20 ms), variable stereo linking, mid- or side-only processing, external side chain input, triggering on a separate frequency range
- Steepness of each crossover slope can be freely adjusted between 6 dB/oct and 48 dB/oct
- Intelligent, highly program- and frequency-dependent attack and release curves
- Unique interactive multiband display, designed for an optimal workflow
- Global dry/wet mix from 0% to 200% to easily scale the total effect of the plug-in
- High-quality audio processing algorithms with 64-bit internal processing where needed
- Up to four times linear-phase oversampling
- Accurate and smooth real-time frequency analyzer with pre- and post-processing options and 'freeze' feature
- Precise output metering
- Undo/redo and A/B comparison

"Making multiband compression/expansion easier and more flexible than ever, FabFilter Pro-MB is beautifully designed and sounds superb. Verdict: 9/10!"
— Computer Music Magazine

"FabFilter Pro-MB is well executed on every level from the intuitive and attractive interface, to the brilliant sound quality."
— FutureMusic

## Key features

- Up to six freely placed processing bands
- Dynamic Phase processing for transparent sound
- Minimum and Linear Phase modes
- Customizable per-band dynamics controls
- Adjustable crossover slopes
- Interactive multiband display
- Real-time frequency analyzer

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/fabfilter-pro-mb/id1468280455/reviews.md

### 1/5 — Was great until…

*2025-06-07*

The Side Chain drop down menu vanished and side chaining stopped working all together, on every project and every single one of my mixes has completely fallen apart

### 5/5 — Developer responsive and great app

*2021-03-03*

Just wanted to thank the developer for a great app and their very responsive.

**Developer response:** We fixed this back in September 2020.

## Frequently asked questions about FabFilter Pro

### What is FabFilter Pro-MB?

FabFilter Pro-MB is a versatile multiband dynamics plug-in that allows for up to six freely placed compression or expansion bands across the audio spectrum. It offers advanced processing modes for transparent sound and requires a compatible host app to operate.

### Does FabFilter Pro-MB work as a standalone app?

No, FabFilter Pro-MB is designed to be used as an Audio Unit (AUv3) plug-in within a compatible host application such as Auria, AUM, or Cubasis on iPad. It filters and processes microphone input in real-time when hosted.

### What are the key processing modes in FabFilter Pro-MB?

FabFilter Pro-MB offers High-quality Linear Phase, Minimum Phase, and a newly developed Dynamic Phase mode. The Dynamic Phase mode provides zero latency and avoids phase distortion and pre-ringing artifacts for exceptionally transparent sound.

### How much does FabFilter Pro-MB cost?

FabFilter Pro-MB is a paid application, priced at $39.99. This one-time purchase grants access to all of its advanced multiband processing features.

### What devices is FabFilter Pro-MB compatible with?

FabFilter Pro-MB is currently supported on iPad devices. It requires a host app that supports AUv3 audio unit extensions for effects plug-ins.

### How often is FabFilter Pro-MB updated?

FabFilter Pro-MB was last updated on December 20, 2023, to version 1.29. This indicates a commitment to ongoing development and support for the application.

### What kind of dynamics processing can FabFilter Pro-MB handle?

FabFilter Pro-MB can handle a wide range of dynamics processing, including transparent compression, limiting, expansion, upward compression, and gating. Each of the six bands can be individually configured for threshold, range, attack, release, ratio, and more.

### Does FabFilter Pro-MB have ads?

No, FabFilter Pro-MB does not contain advertisements. As a paid application, it provides an ad-free experience for users.

## Version history (last 5 releases)

### 1.29 — 2023-12-20

- Added Export Preset Folder command to the preset options menu that enables you to export the entire preset folder, so you can load these presets on Mac or Windows.
- Minor fixes and improvements.

### 1.25 — 2021-12-14

Small bug fixes and improvements.

### 1.24 — 2021-07-06

- Added Share Preset and Options > Import Preset and Import Preset Folder commands to the preset menu: this makes it possible to share presets with other iOS and Mac/PC devices.
- Fixed incorrect text colors for editing in Dark Mode: this made it impossible to see the typed text.

### 1.22 — 2020-09-24

Fixed a problem that caused the interface to not show up on iOS 14 the first time it is opened.

### 1.21 — 2020-06-25

Small bug fixes and improvements.

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## More apps by FabFilter

- [FabFilter Pro-Q 2](https://appshunter.io/ios/app/fabfilter-pro-q-2/id1401182622)
- [FabFilter Pro-C 2](https://appshunter.io/ios/app/fabfilter-pro-c-2/id1468123337)
- [FabFilter Pro-DS](https://appshunter.io/ios/app/fabfilter-pro-ds/id1468273683)
- [FabFilter Pro-G](https://appshunter.io/ios/app/fabfilter-pro-g/id1468277373)
- [FabFilter Pro-L 2](https://appshunter.io/ios/app/fabfilter-pro-l-2/id1468295823)

All apps by FabFilter: https://appshunter.io/developer/421796789

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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 2026-07-05.*
