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An introduction to DDMF ColourEQ, based on information from the maker and distributors: what it does, how to use it and who it may suit. It is not scored.
Not just another EQ: with its custom-made 4th order IIR filter, ColourEQ sounds unlike any other EQ you have ever come across.
— DDMF official site
What is ColourEQ?
ColourEQ is a free equalizer from plug-in maker DDMF, listed on the official Freeware page.
Its feature is a custom-made 4th-order IIR filter. The five bands are super-parametric peaking filters: besides the usual gain, width and frequency, there is one more parameter that affects the curve shape.
The official page says these shapes cannot be reproduced by ordinary IIR equalizers. Further features are adjustable GUI colors, a freely resizable window, internal 64-bit processing and low CPU usage.
DDMF's freeware supports Windows 7 or later and Mac 10.11 or later, in VST, VST3, Audio Unit and AAX formats, and Apple Silicon is supported.
Custom 4th-order IIR filter
A custom-made 4th-order IIR filter lets it produce curve shapes unlike ordinary EQs, which may be worth comparing with your usual EQ.
Five super-parametric bands
All five bands are peaking filters, with a fourth parameter for the shape in addition to gain, width and frequency.
Adjustable GUI colors
The interface colors can be customized to suit your preference and working environment.
Resizable window
The window can be freely resized, which helps with fine adjustments.
Internal 64-bit processing, low CPU
Processing is 64-bit internally and CPU use is described as low, a point to consider when using many instances.
Wide format and OS support
Provided in VST, VST3, Audio Unit and AAX for Windows and Mac (Intel/Apple), and the page also lists Linux builds.
Specifications
| Item | Details |
|---|---|
| Type | Equalizer |
| Bands | 5 (super-parametric peaking filters) |
| Filter | Custom 4th-order IIR |
| Processing | Internal 64-bit |
| Formats | VST, VST3, Audio Unit, AAX |
| OS | Windows 7+, Mac 10.11+ (Apple Silicon supported) |
| Price | Free |
What is included and system requirements
- Formats: VST, VST3, Audio Unit, AAX
- Windows 7 or higher (32- and 64-bit binaries)
- Mac 10.11 or higher (32-bit binaries up to OSX 10.14, 64-bit for all versions), Apple Silicon supported
- Downloads for Windows, Mac (Intel/Apple) and Linux (ARM, x86_64) are on the Freeware page
How to use it
- Open DDMF's official Freeware page and choose the link for your OS under ColourEQ.
- Install the downloaded file.
- Rescan plug-ins in your DAW.
- Insert ColourEQ on the track you want to equalize.
- Start with one band and move frequency and gain to hear the change.
- Compare curve shapes by changing the width and the extra shape parameter.
Shaping a vocal
The five bands could be used to adjust problem areas; since the curve shape is variable, you may compare broad gentle moves with narrow sharp ones.
Finishing a mix bus
With its low CPU use, it could be placed lightly on a bus or master.
Narration and streaming voice
With the resizable window it may suit adjusting a voice into a comfortable range while watching frequencies.
Who it may suit
- People who want a free EQ with unusual curve shapes
- People who like to customize interface color and size
- People who need an EQ for Mac (Apple Silicon) or Linux
Good to know before you buy
- There is no dedicated product page; it is introduced on DDMF's Freeware page.
- No separate GUI image or manual link was seen on this page; check the manual after downloading for details.
- It is freeware, so the price is free.
How it differs from similar products
We do not pick a winner; the official figures are placed side by side.
IIEQDDMF
ColourEQ has five bands, all super-parametric peaking filters. DDMF's IIEQ has ten bands, with the first and tenth as shelving filters and the rest as peaking filters.
Price
Free to use (DDMF official site, checked 2026-10-27).
Freeware offered by DDMF.
See ColourEQ on the product page
Sources: ddmf.eu (checked 2026-10-27)
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