# P252 MDN Diode — Germanium Diode Compressor

> Germanium Diode Compressor (iPhone/iPad app by Pulsar Modular.)

- Source: https://appshunter.io/ios/app/p252-mdn-diode/id6804660463 (this page in markdown: same URL + `.md`)
- Developer: [Pulsar Modular](https://appshunter.io/developer/6793457903)
- Category: Music, Productivity
- Price: $19.99
- Age rating: 4+
- Requires: iOS 15.0 · 29 MB
- Released: 2026-08-27
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/p252-mdn-diode/id6804660463/reviews.md

## What is P252 MDN Diode?

P252 MDN Diode is a germanium diode bridge compressor created by Pulsar Modular and Marc Daniel Nelson. Nearly two years in the making, it delivers the weight, movement and harmonic character of the rare germanium diode-bridge design - now on your iPhone and iPad.

Use it as an AUv3 plug-in in your favorite host (Logic Pro, GarageBand, AUM, Cubasis and more) or as a standalone app processing live sound from your microphone.

KEY FEATURES:
- Germanium diode bridge compression with program-dependent behavior
- RESPONSE TIME and RELEASE controls tuned for musical timing
- Ratios from gentle 2:1 up to Limit, plus Linear mode
- FF / FB sidechain topology switch
- External sidechain input (AUv3)
- STOCK / DRIVE transformer voicings and NORM / HEFT weight modes
- AIR switch and 3-way analog noise floor
- MATCH gain matching for honest A/B decisions
- A/B compare with copy, MOD and oversampling
- Simpson-style VU metering (RMS in/out) plus dual gain reduction meters
- Touch-friendly "Link Threshold & Trim Out" and "Link Trim In & Out" gain staging
- Full preset manager with folders, favorites, import and export
- Parameter automation in AUv3 hosts

Audio is processed entirely on your device - no account, no data collection, no internet connection required.


## Version history (last 1 release)

### 1.0.12 — 2026-08-27

No release notes.

## More apps by Pulsar Modular

- [P410 Joyride](https://appshunter.io/ios/app/p410-joyride/id6793457901)
- [Q Sahara](https://appshunter.io/ios/app/q-sahara/id6794289830)
- [P422 Fairuz](https://appshunter.io/ios/app/p422-fairuz/id6801470405)

All apps by Pulsar Modular: https://appshunter.io/developer/6793457903

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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 2026-08-30.*