Stone Voices has released Moss Equalizer, a freeware equalizer VST plugin for compatible host applications on Windows.
Moss Equalizer works with FFT (Fast Fourier Transform) algorithms and is capable of steep frequency adjustments – from -150dB up to +60dB in the frequency domain of 10Hz to 20kHz.
See also: Best FREE Mastering SoftwareWith such a wide range for adjustments, the Range control in Moss Equalizer is particularly helpful. It lets you specify the minimum and maximum amplitude manually, in dB. Furthermore, the FFT algorithm can be adjusted manually as well with the provided FFT Size control.
Below it, you can choose a visual theme for the interface. Other options include Logarithmic Level and Spline Curves display, a Limiter, a Bypass switch, and a Dry/Wet mix knob for blending dry and equalized signals to taste.
An exciting feature we rarely see in other equalizer plugins is the comb filter modeling. Dialed in purposefully, it is capable of creating a vocoder-like effect. This is accomplished by using frequency characteristics that visually resemble a comb with sharp teeth, so to say. Its peak frequencies are tuned according to musical tonalities and their respective overtones.
Another useful and innovative feature is the ability to load frequency response files. The custom .MEB file format is a plain text file that can be edited with any text editor. The developer has provided a set of example files with comb filter characteristics to help new users explore the plugin’s musical filtering abilities more easily.
What’s even more interesting is that you can load frequency characteristics with a MIDI controller via regular CC mapping. This way, you can actually “play” the comb filters, not unlike a real vocoder.
All in all, Moss Equalizer is an advanced plugin that explores territories rarely charted by other equalizers, free or commercial. As an experimental or general-purpose equalizer, I feel this plugin can go a long way.
Moss Equalizer is available in VST2 and VST3 format for 32 and 64-bit digital audio workstations on Windows. The plugin is completely free, although the developer does accept donations.
More info: Moss Equalizer (3.1 MB download size, ZIP archive, 32-bit & 64-bit VST/VST3 plugin format for Windows)
More articles:
Last Updated on December 12, 2025 by Tomislav Zlatic.
