# Filterstation2 — Filter effect for AUv3

> Dual filter effect plugin for AUv3 with multiple algorithms and creative sound shaping tools. (iPhone/iPad app by Audio Damage, Inc..)

- Source: https://appshunter.io/ios/app/filterstation2/id1329509841 (this page in markdown: same URL + `.md`)
- Developer: [Audio Damage, Inc.](https://appshunter.io/developer/1248448317)
- Category: Music
- Price: $4.99
- Rating: 4.50/5 from 19 App Store ratings · 12 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 29 MB
- Released: 2018-01-04
- Data updated: 2026-09-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/filterstation2/id1329509841/reviews.md

## What is Filterstation2?

Filterstation 2 is the Audio Damage dual filter, built for sound design and performance rather than corrective EQ. It runs two resonant filters in series, in parallel, or split across the stereo field, with twelve filter algorithms and a full set of modulation tools for movement, distortion, and rhythm.
FEATURES

Twelve filter algorithms, including our 914 bandpass and Filterpod lowpass models, a clean state-variable filter, and an MS20-style filter, covering lowpass, highpass, bandpass, and notch. Each of the two filter slots can run a different one.
Serial, parallel, and true stereo routing. Run the filters one into the next, side by side, or split hard left and right.
Envelope follower with stereo sidechain. Drive the cutoff from a signal's own dynamics for auto-wah, or feed in an external source so one track opens the filter on another.
LFO with twelve patterns, internal or tempo-synced.
VCA mode for tremolo and gating.
FSU section for extra signal hacking, for when clean is not the point.
Resizable vector interface, sharp on every iPhone and iPad display.
Universal preset system. XML-based presets move between iOS and the desktop versions.

IN USE...
Sweep the cutoff by hand for filter rises and drops. Set the envelope follower to track the input for an auto-wah that moves with your playing. Patch a kick into the sidechain to duck a pad or bassline in time. Run the two filters in series for steep formant shapes, or in parallel for wide dual-band sweeps. Tempo-sync the LFO for rhythmic gating, then bring in the FSU section when the part needs to fall apart.
Filterstation 2 runs as an AUv3 plugin inside any compatible iOS host, including AUM, Cubasis, Drambo, apeMatrix, and GarageBand. It is also available for macOS, Windows, and Linux as a desktop plugin, and presets move freely between them.
Requires iOS 13 or later. An AUv3 host app is recommended.

Features

• Twelve different filter algorithms, including MS20 emulation and our classic 914 bandpass and Filterpod lowpass models.

• VCA mode for tremolo and gate effects.

• LFO with twelve different patterns, and both internal and tempo sync modes.

• Envelope follower for dynamic control of filter frequency.

• Serial, parallel, and true stereo operating modes. 

• Easy-to use interface for quick programming.

• Vector-based resizable GUI. Use just the filter screen, slide the controls over it, or (in hosts that allow it) open up the whole UI.

• Cross-platform XML-based preset manager; copy your desktop presets to the iOS version using Handoff, or share them with your friends and in forums.

• Full PDF manual available at Support link.

## Key features

- Twelve filter algorithms
- Envelope follower with sidechain
- VCA mode for tremolo/gate
- LFO with tempo sync
- Serial, parallel, and stereo modes
- Resizable GUI
- Cross-platform preset manager

## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/filterstation2/id1329509841/reviews.md

### 4/5 — Preset Name Issue

*2024-06-02*

When I edit and save a preset, the name of the Factory Preset is displayed instead of the name I entered in Preset name. Please fix this.

### 5/5 — top

*2023-03-20*

klingt sehr gut. bedienung der filterverknüpfung manchmal etwas hakelig. wäre schön, wenn man die beiden fikter aufeinen exakten gemeinsamen wert reseten könnte (statt sie da so ungefähr hinzuschieben). klanglich toll, inbes. mit der sättigung.

### 5/5 — Unique app

*2023-03-20*

There’s still nothing else on the App Store that does what filterstation does.

The side chain input and the way you can combine it with the other settings is genius

### 3/5 — Midi control?

*2022-09-15*

According to the manual CC automation is left up to the DAW. 
Great but there's no midi learn feature or list of midi implementation that I could find. Somewhat frustrating.

### 5/5 — There’s a lot here to adjust the sound with!

*2021-03-24*

Yes, I don’t feel at all qualified in any way to pronounce on this as I only just started using audio damage apps after iOS 14.2 klutzed them, they are now all working.  So, I can say, there’s two blobs attach themselves to separate frequnecies, you then drag these blobs around, and can use the ‘chainlink’ that connects them, to move both at once.  It can sound glitchy, or make changes that are like, but not the same as, an EQ adjustment would.  

That ‘linked’ adjustment is the graphical part, and the waveform is displayed behind, ghosted in places but in full, and so you see the damage you’ve wrought, or enhancements.  Then there are sliders that you can make appear, to make other adjustments to various parameters like ‘attack’ and these two main categories of adjustment combine to give the overall output of whatever you fed in.

Now I just stuck this effect on a basic synth lead sound, but I hanker to shove a guitar signal in there, and fancy that could be a spirited experience. 

There, these are my observations, meagre and paltry pickings though they are.  It’s capable of a wide range of adjustment, is my takeaway, and now that iOS has gotten over it’s little audio-tantrum, I can start to utilise the apps that got hit by that.

### 5/5 — Sounds incredible until it crashes in AUM

*2020-12-14*

Immediately fell in love with this app and the crazy range of sounds that can be intuitively coaxed out of it BUT it constantly crashes in AUM and forces me to restart in order to get any sound to pass through, even when disabling Filterstation2 as an effect.
Again, absolutely love the sounds and the operation but if I can only use it for a minute or two before it forces me to restart AUM (and I’ve had this problem on both iPad and iPhone) there’s definitely something wrong.

### 5/5 — Got updated with new features

*2020-07-23*

Love paying for an app and it gets updates with new features l. Thank you

### 5/5 — Bravo with the update

*2020-07-23*

Excellent work

### 2/5 — Very good, but...

*2019-08-24*

very good emulation of the filterbank, the sounds are convincing, the dynamics well respected for an app ios but ... why I only have the left mono?! .. I watched the routing of cubasis but it does not come from it ... this app will blow my head!

### 5/5 — Great sound quality and pretty useful fx

*2019-06-14*

I won’t mention what it does, YouTube is best for that. I’ll just say that it’s pretty reliable in all the DAWs I’ve used (ApeMatrix, BM3, Cubasis). In terms efficiency, it’s very good too, plays well with others. This is important because iPads are still quite limited on resources. Plugins like RE-1 and ShimmerFX (from other developers) for example look and sound great but their UI quickly begins to stutter under less than average loads. Not a problem here. You can tweak the controls to make the sound your own. I love having these kinds of quality fx in my toolbox 🧰 Audio Damage is probably my fav fx company at the moment. Efficient good sounding AUv3 plug-ins, I have most of them.

## Frequently asked questions about Filterstation2

### What is Filterstation2?

Filterstation2 is an audio effect application that provides a classic serial/parallel/stereo dual filter topology. It offers twelve distinct filter algorithms, an envelope follower, and a full FSU section for advanced signal manipulation.

### What filter algorithms does Filterstation2 include?

Filterstation2 features twelve different filter algorithms. These include an MS20 emulation, the classic 914 bandpass model, and Filterpod lowpass models, offering a wide range of sonic possibilities.

### Can Filterstation2 be used for tremolo and gate effects?

Yes, Filterstation2 includes a VCA mode that allows it to function as a tremolo or gate effect. This adds further versatility to its sound-shaping capabilities.

### Does Filterstation2 support tempo sync?

Filterstation2 has an LFO with twelve different patterns, and it supports both internal and tempo sync modes. This allows for rhythmic modulation synchronized to your project's tempo.

### How does Filterstation2 handle presets?

It features a cross-platform XML-based preset manager. You can copy desktop presets to the iOS version using Handoff or share them with others through forums and friends.

### What devices is Filterstation2 compatible with?

Filterstation2 is designed for iPhone, iPad, and iPod. It utilizes the AUv3 audio unit extension format, making it compatible with hosts that support this technology on iOS.

### How often is Filterstation2 updated?

The latest version of Filterstation2 is 2.1.0, which was released on July 23, 2020. While the last update was in 2020, the app is stable and well-regarded by users.

### What is the user sentiment for Filterstation2?

Filterstation2 has a strong user rating of 4.5 stars from 19 ratings, indicating positive user sentiment. Users appreciate its powerful features and ease of use for creative audio manipulation.

## Version history (last 4 releases)

### 2.3.0 — 2026-06-16

Filterstation 2 gets a workflow overhaul in this update:

- A brand-new preset browser, now with favorites, so the patches you actually use are one tap away.
- Smooth, click-free master Bypass for clean A/B comparisons.
- New VISUAL selector: a waveform display, a spectrum analyzer, or off.
- The Filter LFO and Envelope amount sliders are now properly bipolar.
- Envelope Attack and Decay sliders give finer control at the low end.
- Doubled the available LFO and envelope modulation depth. Your existing presets are preserved.
- Refreshed About box with web, Discord, and support links.

### 2.1.0 — 2020-07-23

>> SIDECHAIN INPUT
For AUv3 hosts that have sidechain capability, Filterstation 2 is now a destination. You'll see a new "SIDECHAIN" button on the Envelope panel; this switches the envelope source from the main inputs to the sidechain input. For hosts that do not have sidechain capability (which is most of them) it will effectively turn off the envelope follower. 

>> NEW PRESET MANAGER 
Filterstation 2 has received the new-style preset manager we created for Continua, and are rolling in to most of our products. Your user presets may be in a little bit of a funky place, if you have saved any. You may need to re-save them in a new folder. 

>> BUG FIXES AND OPTIMIZATIONS
The behind-the-scenes crap you won't notice at all that is really difficult and usually the most time-consuming part of any update, but makes for a terrible bullet point. Filterstation 2 is built with all the latest SDKs, APIs, and other three-letter things we use.

### 2.0.5 — 2019-07-19

Version 2.0.5 is a maintenance update, to ensure Filterstation is fully compatible with new additions to iOS, and to maintain parity with the desktop versions.

### 2.0.4 — 2018-01-04

No release notes.

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## More apps by Audio Damage, Inc.

- [Grind Distortion](https://appshunter.io/ios/app/grind-distortion/id1249816007)
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- [Dubstation 2](https://appshunter.io/ios/app/dubstation-2/id1253069666)
- [Replicant 2](https://appshunter.io/ios/app/replicant-2/id1261900553)
- [Pumphouse](https://appshunter.io/ios/app/pumphouse/id1270238019)
- [Axon 2](https://appshunter.io/ios/app/axon-2/id1289090729)

All apps by Audio Damage, Inc.: https://appshunter.io/developer/1248448317

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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 2026-09-09.*