# JAX SR : Reductor — Selective Frequency Range EFX

> Audio effect app for selective frequency range processing with MIDI control. (iPhone/iPad app by Jens Guell.)

- Source: https://appshunter.io/ios/app/jax-sr-reductor/id6480465350 (this page in markdown: same URL + `.md`)
- Developer: [Jens Guell](https://appshunter.io/developer/1195004865)
- Category: Music, Productivity, Music
- Price: $6.99 (on sale, was $17.99)
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 14.0 · 21 MB
- Languages: English
- Released: 2024-04-04
- Data updated: 2026-06-22
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/jax-sr-reductor/id6480465350/reviews.md

## What is JAX SR?

The JAX SR Series are AudioUnits (AUv3), which allow to select a frequency range for effect processing. This one provides a classic reduction effect with direct MIDI control assignment to the parameters.

The manual ( https://audio.digitster.com/wp-content/uploads/2024/04/JAX-SR-Reductor.pdf )
and more information can be found on the product website at: https://audio.digitster.com/

This build is truly 'universal', meaning, the audio unit is available for:

- MacOS (Apple Silicon)
- iOS (all actual iPhones)
- iPadOS (all actual iPads)
- visionOS (Apple Vision Devices)

Note: We do no longer focus on Intel compatibility, because Apple's Intel support is marked deprecated for the near future.

Requirements:
MacOS 10.15++
iOS 14.0++

## Key features

- Selective frequency range effect processing
- Classic reduction effect
- Direct MIDI control assignment
- Universal build for Apple devices
- AudioUnit (AUv3) format


## Frequently asked questions about JAX SR

### What is JAX SR Reductor?

JAX SR Reductor is an AudioUnit (AUv3) application that allows you to select a specific frequency range for effect processing. It provides a classic reduction effect with direct MIDI control over its parameters.

### What devices is JAX SR Reductor compatible with?

JAX SR Reductor is a universal build and is available for MacOS (Apple Silicon), iOS, iPadOS, and visionOS. It requires MacOS 10.15++ or iOS 14.0++.

### How much does JAX SR Reductor cost?

JAX SR Reductor is a paid application, priced at $17.99. There are no in-app purchases or subscriptions available for this product.

### Does JAX SR Reductor have ads?

No, JAX SR Reductor does not contain advertisements. It is a premium application focused on providing a clean and uninterrupted audio processing experience.

### Can I control JAX SR Reductor with MIDI?

Yes, JAX SR Reductor offers direct MIDI control assignment to its parameters. This allows for hands-on manipulation of the effect, enhancing creative workflows.

### How often is JAX SR Reductor updated?

The latest version of JAX SR Reductor is 4.0, released on July 15, 2024. This indicates active development and regular updates to the application.

### What is the user rating for JAX SR Reductor?

JAX SR Reductor has a perfect rating of 5.0 stars based on 1 review. This suggests a highly positive user experience among its current users.

### Where can I find more information or a manual for JAX SR Reductor?

You can find the manual for JAX SR Reductor at https://audio.digitster.com/wp-content/uploads/2024/04/JAX-SR-Reductor.pdf. More information about the product is also available on the developer's website at https://audio.digitster.com/.

## Version history (last 4 releases)

### 4.0 — 2024-07-15

- regular maintenance update
- performance optimizations
- code synchronisation
- beta versions timeout

latest information is always available on our product and support website at :
https://audio.digitster.com

### 3.4 — 2024-06-06

- fixed a problem with MIDI Controller assignment (negative numbers)
  note: -1 is valid and means no controller assigned, zero is MIDI modulation wheel
  
- fixed a potential crash with MIDI automation, if controller number was negative
- re-adjusted the controller assignment slider for slower scrolling
- re-adjusted the knobs for slower movement
- removed unused UI elements (offset numbers)
- corrected parameter (state) restoring behaviour

Note: when moving and sizing (snowflake), 
double tapping with two fingers will reset the size to fit the available space

### 3.3 — 2024-05-21

maintenance update 3.3

- we fixed a problem with user preset naming
- you can delete user presets by swiping to the left in the preset browser
- the display contrast feature is now saved and restored with an AU preset
- presets are XML text files and can be shared across all devices.

If you find the concept of our Selective Frequency Range Series useful,
please write us some words and your ideas and wishes for future releases.

### 3.2 — 2024-04-04

No release notes.

## Apps similar to JAX SR

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [KA mini NanXiao](https://appshunter.io/ios/app/ka-mini-nanxiao/id6479744355) | 5.0 (2) | $1.99 | Music |
| [BandDelay](https://appshunter.io/ios/app/banddelay/id1482011637) | 4.4 (11) | $3.99 | Music |
| [Surreal Machines Crack](https://appshunter.io/ios/app/surreal-machines-crack/id6615060994) | 5.0 (4) | $7.99 | Music |
| [NightShine AUv3 Compressor](https://appshunter.io/ios/app/nightshine-auv3-compressor/id6746288283) | 5.0 (1) | $4.99 | Music |

## More apps by Jens Guell

- [GM MIDI Player](https://appshunter.io/ios/app/gm-midi-player/id1445780869)
- [MIDI SWEET : Clock Sync (AU)](https://appshunter.io/ios/app/midi-sweet-clock-sync-au/id1454284852)
- [JAF Model One](https://appshunter.io/ios/app/jaf-model-one/id1472652593)
- [JAF Collection](https://appshunter.io/ios/app/jaf-collection/id1472896422)
- [JAX Stereo Tool (AU)](https://appshunter.io/ios/app/jax-stereo-tool-au/id1473390302)
- [JAX !Make Louder (Audio Unit)](https://appshunter.io/ios/app/jax-make-louder-audio-unit/id1474614677)

All apps by Jens Guell: https://appshunter.io/developer/1195004865

---

*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 2026-06-22.*