ERS_250
The ERS 250 reverb audio plugin was originally designed and sold by Harrie Munnik and his Dutch company EmptyRoomSystems.
| Price | $13.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (6), current: (6) |
| Version | 2.3.6 |
| Released | 09/03/2021 |
| Updated | 01/03/2026 |
Features:
- Careful reproduction of the original schematics
- Adjustable reverb decay time (from 0.4 to 5 seconds), low frequency response, high frequency response, and predelay
- Additional low-pass filter to create darker sounds
- Dry-Wet ratio adjustable
- Alternative “modern” schematics available
Version 2.3.6 release notes
- built for iOS26 - provided answers for new age classification scheme
More Apps by Christian Siedschlag (5)
MagicDeathEye is an emulation of a high-end tube compressor, available in AUv3 and interapp audio format.
| Price | $24.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Compressor, Limiter, Gate |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (20), current: (20) |
| Released | 06/02/2019 |
| Updated | 12/17/2025 |
Traditional EQs influence the spectrum of the whole stereo field simultaneously. DirectionalEQ takes this concept one big step further: now you can equalize all directions in the stereo field independently.
| Price | $9.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (14), current: (14) |
| Released | 10/27/2017 |
| Updated | 01/02/2026 |
A professional compressor plugin in the audio unit format.
| Price | $9.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Compressor, Limiter, Gate |
| Supports | Audio Unit (AU) |
| Rating | total: (15), current: (15) |
| Released | 05/28/2017 |
| Updated | 12/15/2025 |
The 6144 is an Audio Unit equalizer which aims to recreate the legendary sound of the Neve hardware EQs.
| Price | $9.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (33), current: (33) |
| Released | 07/18/2016 |
| Updated | 12/15/2025 |
Envelope is a high class reverb audio unit for use as a standalone app or (preferably) in AUv3 hosts.
| Price | $9.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audio Unit (AU) |
| Rating | total: (19), current: (19) |
| Released | 06/15/2016 |
| Updated | 01/02/2026 |