The Feen Class-A Mastering EQ
EQ by Note.
Master by Ear.
The only plugin that lets you select frequencies by musical note — with a built-in Class-A Color circuit for analog harmonic warmth.
Note-Based EQ
Select frequencies by note name. Work in the language of your music.
Class-A Color
Analog harmonic saturation built into the EQ path. Warm. Dense. Expensive-sounding.
Built for Mastering
High-pass, three active bands, shelf/bell, bandwidth, A/B compare. The full mastering toolkit.
The Problem
You know the key.
Your EQ doesn't.
You're mastering a track in F major. The vocals need presence. The low end needs definition. You know exactly which notes make up this mix.
But your EQ shows you 3,200 Hz. 6,300 Hz. 160 Hz.
You're sweeping around, trying to translate a musical feeling into a number on a graph. By the time you find the frequency, you've forgotten what you were listening for.
The Feen was built to fix that.
The Solution
Every band is
a note selector.
The Feen puts a 12-note chromatic wheel on every EQ band. You pick the note that matters to the music. Every octave is available. The plugin handles the math.
Your attention stays on the music. Your EQ decisions become musical decisions. The relationship between bands becomes visible the way harmony is visible — not as a cluster of numbers, but as a pattern you already understand.
What's Inside
Four things no other
mastering EQ has.
Note-Based Frequency Selection
A 12-note chromatic selector on every band. Set Band 1 to E2 and Band 3 to A4. Every octave. Works in whatever key the song is in. The plugin calculates the exact hertz value — you never have to.
Class-A Color Circuit
Analog harmonic saturation, selectable by band or full-range. Ten-step amount control. 2× oversampling in Full mode. Not a saturator added on top — built into the signal path from the beginning.
Dual-Channel Mastering
Full L/R Link for efficient stereo work. Independent per-channel control when you need it. Three active bands per channel, high-pass filter, bandwidth control, shelf and steep modes — the complete mastering toolkit.
A/B Snapshot Compare
Store two complete plugin states. Switch between them instantly. The difference you hear is the difference you made — no memory involved. +1 STEP lets you reach between-note frequencies without leaving the musical grid.
Pricing
Launch Price: $79
Launch Price — Limited Time
The Feen launches at $79 — a limited price for early buyers. Regular price will be $129–149 after the launch window.
One purchase. All future updates included.
AU / VST3 / Standalone · macOS 10.14 (Mojave)+ · Apple Silicon + Intel · ~25 MB installed · LimeLM license
Stay in the loop
Get notified at launch.
Lock in the $79 price.
The Feen is in final validation. Join the waitlist — you'll be the first to know when it ships, and the launch price is yours.