Effect · Saturation

Modulr Ferrous

Transformer, tape and tube warmth, in any order — turn each up until it sounds right.

Modulr Ferrous is three pieces of vintage warmth in a row: a transformer, a tape stage and a tube stage. Each has its own drive and its own character, and you can put them in any order — the picture of your sound redraws as you move them, so you can see the curve you are hearing. It stays clean even when you push it hard.

Works in your music software · VST3 and Audio Unit

Add to basket · $20→All effects→

3 stagesin any order

Warmthfrom gentle to driven

VST3 · AUApple silicon, macOS 11 or later

The editor

This is the plug-in.

Modulr Ferrous as it opens in your host, picture for picture.

Modulr Ferrous: the editor, at its default preset — The plug-in’s own editor, live against its own engine on a test tone. A capture, not a mock-up.

Modulr Ferrous: the editor, with another preset loaded — The same editor with another factory preset loaded.

What is in it

Modulr Ferrous, in a list.

Transformer, tape and tube stages
Any order — hear and see the difference instantly
Drive and character per stage
Stays clean pushed hard

Install it

Version 0.1.0, 2026-11-06.

The Modulr Hub app installs it for you, one click, and checks the download on the way in. Prefer doing it by hand? Unzip the file into the folder shown. Ad hoc (no Developer ID) and not notarised, so the first time you load it macOS asks you to allow it (System Settings, Privacy & Security) — normal for a small maker, and it only happens once.

Format	Folder	File	Size	SHA-256
VST3	VST3	Modulr-Ferrous-0.1.0-macos-arm64-vst3.zip	2.1 MB	328c5beeeec0abd95ba2c6f985ade9ac2563cc4842e658f198b9a50ab3fbd6fc
Audio Unit	Components	Modulr-Ferrous-0.1.0-macos-arm64-au.zip	2.1 MB	1952c7c253d48e3ac4d410c583125691213eee87feca149fd38f22ce0cce35c1

The plug-in is built.On saleModulr Ferrous is a working VST3 and Audio Unit for Apple silicon, first release. The pictures above are captures of the shipped editor, not drawings.