ChangelogWhat’s new in 2.0.0, and before FAQAnswers before you install CommunityAsk, suggest, report a bug SourceThe GPL code for every release
New in v2.0.0 A new window around a rebuilt sound.

FluidEQ

System-wide EQ with its own audio engine · Windows 10 & 11

Your sound, finally worth watching.

A system-wide parametric EQ for Windows, run by its own audio engine or by Equalizer APO — your choice — with a 10-stage DSP rack, a player, karaoke, and visualizers drawn on your graphics card.

Download unsigned installer

FluidEQ is free for Windows. FluidEQ Plus adds living visualizers, the Studio and more, joined inside the app. See Plus 

Windows 10 & 11 v2.0.0 GPL-3.0-or-later Unsigned installer 197 MB

The unsigned build is free on GitHub

Download FluidEQ v2.0.0

The download is free. Before you go, here is the one thing to know — and one completely optional way to help.

The unsigned build is free on GitHub Same application, unsigned — Windows warns about the publisher every time.

v2.0.0 197 MB Windows 10 & 11 Unsigned installer

SHA-256 00B52ED98DDD9815065EC4228310228EB46F514460E0256FD6CCF7FF12CA06C2

What your PC needs

  • Windows 10 (version 1803) or 11, 64-bit · 4 GB of memory · about 600 MB of disk
  • Visualizers: any graphics from 2013 onwards. 4K, or a desktop background on several screens, prefers a dedicated card
  • Karaoke AI downloads its models on first use: 713 MB for voice separation, about 180 MB for pitch, 11 MB for noise removal
  • Comfortable: Windows 11 · 8 GB of memory · graphics from 2018 · 3 GB free for the AI models
QR code for the FluidEQ Buy Me a Coffee page

Buy me a coffee

Help FluidEQ reach more people

FluidEQ is an independent project built by one person. Your support buys the time to make it better, help more listeners, and explore versions for macOS and Linux. Every contribution is optional, and the Windows download stays free.

Buy me a coffee
Download unsigned installer · 197 MB Release notes 

Installation guide

Two clicks in Windows

Open the downloaded FluidEQ installer. If Windows shows this warning, follow these steps only for the installer from this site’s GitHub release.

Click “More info” Check that the app is FluidEQ, then click “Run anyway”
Open the downloaded FluidEQ installer. If Windows shows this warning, follow these steps only for the installer from this site’s GitHub release.
  1. Click “More info”
  2. Check that the app is FluidEQ, then click “Run anyway”
  3. Keep “FluidEQ Audio Processing Engine (recommended)” selected, then click “Next”.
  4. Read the license, then click “I Agree”.
  5. Windows asks for permission once, for the audio engine. Click “Yes”.

Screenshots show English Windows; labels may differ. Follow the installer prompts next.

Once it is installed First steps with FluidEQ

New in v2.0.0

2.0 A new window around a rebuilt sound.

The biggest FluidEQ yet: the whole window redrawn in the colors of its new icon, forty visualizers and real 3D worlds drawn on your graphics card, and a sound rebuilt preset by preset, so what you hear is exactly the curve you drew.

The equalizer in FluidEQ 2.0: the new title bar and section tabs, a live spectrum drawn 80 dB deep behind fifteen bands, the Tone row with its low cut, Bass, Mid, Treble and high cut, and the output panel beside it.

A NEW LOOK

A new window, in new colors

The panes stand on one open floor in the colors of the new icon, and one slider, Brightness, takes the whole window from near-black to a light ocean blue. With a Plus visualizer on the graph, the window can take its colors, or let it play behind everything.

  • 40looks on your graphics card
  • 12studio views of the sound
  • 80dB analyzer, down to 10 Hz
  • 24rooms for headphones, all free
  • 83music styles, each a whole chain

THE FLUIDEQ ENGINE · AUTO NORMALIZE

A volume that holds, and never clips

Auto-leveling built into the FluidEQ Engine. What you hear stays at one steady loudness while you change the curve or the style, with room always kept under full scale so no boost distorts.

  • No boost can clipAuto normalize sets the level before the EQ for you, from the music actually playing — for the equalizer and the DSP rack alike.
  • One step, no dipChange a band or apply a curve and it lands on the new level at once, then only fine-tunes. It used to dip, and still be climbing back ten seconds later.
  • Every style at one loudnessEach music style is measured and leveled, so switching changes the character, never the volume.
  • Song after songTurn on the Normalizer in the DSP rack and live audio is leveled song by song, remembering the songs it has heard.

A NEW VISUALIZER ENGINE

Every visualizer on your graphics card

The graph's forty looks now draw on the engine the Plus scenes run on: on your graphics card, at your screen's own refresh rate, so bars, particles and peaks glide where they used to step. And a Plus visualizer can now be a real 3D world.

3D world
  • Synthwave
  • Horizon
  • Glass towers
  • LED wall

THE COMPACT PLAYER

FluidEQ, folded into a player

One switch in the title bar folds all of FluidEQ into a player. It is the classic amp, with its LED clock, its lamps and the whole equalizer; on the Backdrop, over a Plus visualizer, it turns to glass. The same switch takes you back to the page you left.

Glass, on Backdrop
Classic amp

Also in v2.0.0

  • POINTER SPARKS

    Visualizers that answer your mouse

    Sparks, petals or snow from the pointer

  • NEW PRESETS

    Presets that sound like the music

    Whole chains, all at one loudness

  • THE FLUIDEQ ENGINE

    Sound exactly as you drew it

    Treble as drawn, silent switches, levels in one step

  • STUDIO VIEWS

    A graph that reads sound like a studio

    Twelve views, an 80 dB analyzer

  • SURROUND ON HEADPHONES

    Sit in the Room

    Twenty-four rooms, all of them free

  • GAME PRESETS

    Every game, its own sound

    Switched when the game comes to the front

  • TONE CONTROLS

    Bass, Mid and Treble, like an amplifier

    Three knobs, a curve of their own

  • FLUIDEQ PLUS

    Make your own visualizer

    Free for 15 days, or earn a month

  • HELP

    Ask the guide in your own words

    Typos, plurals and ten languages

Read all 165 changes →

Earlier, in v1.7

An engine of its own. Scenes worth watching.

FluidEQ now shapes everything the computer plays, and FluidEQ Plus arrives with visualizers drawn on your graphics card. Swipe through what changed, then read every line of it.

Full release notes →

Your first five minutes

First steps with FluidEQ

Start with a familiar song at a comfortable volume. The left rail switches FluidEQ on and holds the preamp; the center is your workspace; the right rail follows your output and its profiles. The bar at the foot of the window controls whatever is playing.

Plus FluidEQ Plus

Watch the music move.

Plus visualizers are living scenes drawn on your graphics card. These are running in your browser right now, to the song from the demo video — the same scenes, through the same scene contract the app runs them in.

Playing to the demo song

Page colours
How to get Plus

The gallery

Try FluidEQ’s own visualizers. Many more are coming.

The four above are from FluidEQ’s official collection, and new ones are on the way. Plus members make scenes of their own in the Studio and publish them, so the gallery keeps growing with its community — browse it by most liked, this week or newest.

Official scenes Made by members

  • Nature
  • Cities
  • Space
  • Water
  • Fire and light
  • Retro games
  • Animals
  • Abstract
  • 3D worlds

Highlighted: the categories playing above.

A gallery of scenes, ready for your music.

Browse them in Plus → Visualizers, preview FluidEQ’s sample scenes for 10 seconds with any account, and add the ones you like to play them on the graph.

The window can take a visualizer’s colors or its light, and some bring birds, petals or stars that drift gently around the app — what this page is doing now.

The Plus Visualizers gallery with FluidEQ's official scenes Bloom, Neon City 3D, Neon City, Chrome, Crystal, Aurora and Alpine.

The short version of the Plus terms.

  • Cancel any timePaid on Buy Me a Coffee. FluidEQ never sees your card.
  • The equalizer, the rack and the players stay freeFluidEQ keeps working offline and without an account, as it always has.
  • You choose what is sharedThe leaderboard is off unless you join, and nothing you make leaves your computer unless you export or publish it.
  • Never your musicFluidEQ’s service never receives your audio, your track names or your EQ.

Plus is joined inside FluidEQ

  1. Download FluidEQ — it is free
  2. Sign in from Account in the actions menu
  3. Choose Plus and pay on Buy Me a Coffee with the same email, so FluidEQ can recognize it
Download unsigned installer Any account can preview the sample scenes first.

Plus See it in motion

A tour of FluidEQ Plus

Everything Plus adds, in four and a half minutes: Visualizers, the Leaderboard, the Studio from an idea to a published scene, Dynamic lighting and the desktop visualizer.

Plus Make it with your AI

Build your own visualizer with your AI.

The Studio turns a description into a visualizer. Your own AI assistant writes the scene in a project folder, and FluidEQ plays each version on your music the moment it is saved. The Studio is part of Plus; a new account can open it on the free trial.

  1. New project…

    Give it a name. FluidEQ makes its folder, with a scene that already moves.

  2. Describe your scene

    What it shows, and what moves with the beat, the bass or the treble. A photo of yours can come alive too.

  3. Copy AI prompt

    It tells your AI how FluidEQ scenes are made, with your idea at the end. Every file it saves plays on the stage right away.

    Any assistant that works on files: Claude, Cursor, Codex, Copilot. With a chat instead, save the files it gives you in this folder.

  4. Publish…

    Anyone signed in can see it in Visualizers. Plus members can play it, add it to their looks and like it.

The Studio with a scene of snowy peaks over a lake at night on its stage, beside the What it hears now meters and the Preview audio buttons, with More, Publish… and Add to my looks above it and the scene's tuning below.

Studio

Make scenes with your AI and watch them live

  1. ProjectYour projects, and FluidEQ scenes to look inside.
  2. StageThe scene, playing on your music. Double-click for full screen.
  3. What it hears nowWhat the scene receives: level, beat, bass, mids, treble.
  4. Preview audioTest signals that drive only this preview.
  5. CodeThe scene’s code, live, updated as your AI saves it.
  6. Publish…Publish it to the gallery for every member
  • Try Plus free for 15 days An optional free trial for new accounts. It starts only when you choose. No card. No automatic charge.
  • Approved: next month free A scene you publish earns a month of Plus once it is approved. Each like earns you points on the leaderboard.
  • Copy the AI prompt and your AI assistant can see your scene and hear how the song moves.
  • Scenes can be real 3D worlds that step on the kick and leap at the drop.
Download unsigned installer

How to start Open Plus and choose Studio in its rail. Without Plus, the page there offers the free trial.

The FluidEQ Engine

Your EQ, on everything you hear.

FluidEQ’s own audio engine runs inside Windows’ audio service, after your sound card’s effects — so games, browsers and streaming apps all pass through your EQ and the whole DSP rack, and the maker’s panel keeps working.

Every appGames, browsers, streaming, calls
WindowsAudio serviceOne engine for the whole PC
KeptSound card effectsThe maker’s panel still works
FluidEQ Engine Your EQ, then the DSP rack
  1. EQ
  2. Normalizer
  3. Denoise
  4. Exciter
  5. Bass Forge
  6. Equaliser
  7. Bass Punch
  8. Dimension
  9. Maximizer
  10. Master
OutYour headphones or speakers
No rebootSetup asks which engine you want. Switching later takes one Windows permission and a few seconds of silence while audio restarts.
Leveled, repaired, protectedThe Normalizer levels live audio song by song and remembers the songs it has heard, Denoise repairs hiss, hum and clicks as they play, and Auto normalize guards the output with a true-peak limiter.
Your sound comes back when FluidEQ goesQuitting from the tray takes the EQ and the rack off every output. If FluidEQ is ended or crashes, your sound is normally restored on its own.

FluidEQ Engine Recommended

  • Your sound card’s own effects and panel keep working
  • EQ and the DSP rack apply to everything, no restart
  • Custom APO commands, Peace and VST plugins do not run

Equalizer APO

  • Custom commands, Peace, VST plugins
  • Takes over your sound card’s effect slot; vendor panels can lose controls
  • DSP rack works in Library playback only. Separate setup, Windows restarts.

Switch any time from the actions menu. Updating FluidEQ keeps the engine you already have.

  • 2audio engines
  • 10DSP stages
  • 128bands per output
  • 6,229headphone models
  • 28free styles
  • 10languages
  • 0accounts needed to use it

Features

Five workspaces, one listening system

Online Media, EQ, DSP, Library and Karaoke share one transport, one volume and one clear signal story. EQ keeps its bands, headphone corrections, presets and convolution together; under the FluidEQ Engine the DSP rack works on every app.

Online Media

Online video with the live response underneath

Play online video inside FluidEQ while the response graph and the live spectrum stay in view, and one player at a time keeps Library, Karaoke and Online Media from talking over each other.

1active player at a time

Online Media — Online video with the live response underneath

EQ

Up to 128 bands, every filter type

Headphone corrections from 6,229 models, convolution and your own bands, each a layer with its own switch and strength, under a preset that sets the whole chain in one pick. Also: EQ mode, band designs, and switching a band off without losing it. Try the layers here.

128bands per output

DSP

A 10-stage rack for everything you hear

Normalizer, Denoise, Exciter, Bass Forge, Equaliser, Bass Punch, Dimension, Room, Maximizer and Master. Under the FluidEQ Engine the rack works on everything you hear; under Equalizer APO, on FluidEQ’s own player.

112DSP EQ presets

DSP — A 10-stage rack for everything you hear

Library

Your own music, played in the app

Browse by album, artist, song or video, and turn whatever you are looking at into the queue. The next song starts even while FluidEQ is minimized, and its taskbar button carries Previous, Play/Pause and Next.

5ways to browse

Library — Your own music, played in the app

Karaoke

Timed lyrics, multilingual sheets, pitch lane and chords

Timed lyrics, a pitch lane and estimated chords in the player; the Karaoke Maker splits a song into voice and backing and lines the lyrics up on your machine.

3lyric formats

Karaoke — Timed lyrics, multilingual sheets, pitch lane and chords

No virtual audio device, no telemetry, and no account needed for the free app.

All 30, in detail

Portrait of Ivan Carmenates Garcia, the developer behind FluidEQ
Ivan Carmenates Garcia Developer · father · still shipping

The person behind FluidEQ

Built between bedtime and the next idea.

I’m Ivan Carmenates Garcia. I belong to the in-between era: old enough to have written Z80 machine language by hand, young enough to still ship software today.

  1. 01

    The first machine

    My father traveled across provinces to find his kid a better computer. That machine opened a door I never stopped walking through.

  2. 02

    Closer to the metal

    MSX-era BASIC led to hand-written Z80 code, then to a lifetime of asking how complex software could feel clear and immediate.

  3. 03

    Still shipping

    Today I’m a developer, a father of two, and the person building FluidEQ. The quiet hours after family time are when filters are tuned, bugs are chased, and the next workspace takes shape.

One coffee is roughly one late night of building. It helps keep FluidEQ free, local, maintained, and moving forward.
Support my work Find me on LinkedIn 

A hidden reward

Find the beat. Keep the spectrum.

Tap the pet on the beat. In FluidEQ the game hears the percussion in your own audio; here, reach ×10 and this page turns rainbow too.

In FluidEQ itself, Rainbow mode is one click away in the What’s new tour — no ×10 required.

What actually changes

  • Every EQ band drops its single teal and takes its own color, and each slider pulses with what that band is hearing.
  • The response curve thickens and its glow becomes the spectrum. The selected handle swells with the level under it.
  • The title-bar meter grows taller and starts drawing at your screen’s full refresh rate instead of the thirty it is capped to otherwise — the wave gets visibly smoother.
  • Menus, About and What’s new pick up the same sweep, so the color is not just on one screen.
  • The pet gets a spinning aura, and the moment you reach it two rings go out across the whole window.
  • Nothing behind text is tinted. The color lives on edges and on things that were already moving, so the app stays readable.
  • Ctrl+E turns it off and on from then on, and reduced motion keeps the color while holding it still.

FluidEQ / v2.0.0

Free to download. Plus when you want more.

The complete app costs nothing, and neither does building it yourself. FluidEQ Plus is an optional membership for the scenes and the places they live, joined inside the app.

FluidEQWindows 10 & 11

$0free, GPL-3.0-or-later

  • Both engines: the FluidEQ Engine or Equalizer APO
  • EQ, headphone corrections, convolution and the 10-stage DSP rack
  • Library, Karaoke and the Karaoke Maker, Online Media and Share Audio
  • 28 styles for the graph, with Auto switching
  • Browse the gallery and try FluidEQ’s own sample scenes, with a free account
Download unsigned installer

FluidEQ PlusPlus

$5a month, or $50 a year · cancel any time

  • Plays and adds every scene in the gallery, and unlocks the Plus looks
  • The whole Studio: every project, and your scenes in your looks, in the gallery or as a file
  • Scenes on your desktop and on your RGB lights (beta)
  • A place on the leaderboard, if you choose to join
  • One account, signed in on up to 5 computers at a time

Joined in the app FluidEQAccountPlus

FluidEQ is free software under the GNU GPL v3. Plus is a membership for scenes and online features — nothing on this page restricts what you may do with the software.

Your first five minutes

First steps with FluidEQ