Effect · Spring reverb

Modulr Tension

A spring reverb you can take apart: change the metal, stretch the spring, then pluck it.

Modulr Tension is a spring reverb built from a real model of a metal spring. Set its length, stretch and wire thickness in millimetres, choose steel, brass, bronze or titanium, run one spring or three, press a felt on the wire — then pluck it and knock the tank. The spring on screen is the one ringing: what you see is the wave you hear.

Works in your music software · VST3 and Audio Unit

Add to basket · $20→All effects→

1 to 3 springsyou build the tank

Latency 0the dry sound is never delayed

VST3 · AUApple silicon, macOS 11 or later

The editor

This is the plug-in.

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

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

What is in it

Modulr Tension, in a list.

One to three springs in a tank
Length, stretch and wire thickness in millimetres
Steel, brass, bronze or titanium
Pluck the wire; knock the tank

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-Tension-0.1.0-macos-arm64-vst3.zip	2.1 MB	96b2fa12659e208173781771d7517fda3942e6f5fc3dfb8be00672ce9322ebec
Audio Unit	Components	Modulr-Tension-0.1.0-macos-arm64-au.zip	2.1 MB	7118c1c80ea73e171a67940501920097cdf25fa8bebfb09681f7292890b2c79d

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