FluidEQ
System-wide EQ with its own audio engine · Windows 10 & 11
A system-wide parametric EQ for Windows, run by its own audio engine or by Equalizer APO — your choice — with a nine-stage DSP rack, a player, karaoke, and visualizers drawn on your graphics card.
FluidEQ is free for Windows. FluidEQ Plus adds living visualizers, the Studio and more, joined inside the app. See Plus
Parametric bands and live response
Up to 128 bands per output, each with its own filter, over the live spectrum and the combined response.
The Maximizer, in the DSP rack
Raise the level without letting peaks pass the ceiling, and watch the last six seconds of output as it happens.
Your music, by album
Flip through covers, open an album to its songs, and keep Up Next in view while it plays.
Online Media, inside FluidEQ
YouTube, YouTube Music, Bandcamp, Twitch and Suno, played inside FluidEQ with the same EQ and DSP.
Karaoke, with a pitch lane
Timed lyrics set large, UltraStar syllables and pitch, and a lane that shows your voice against the melody.
The Plus Studio
Describe a scene, paste FluidEQ's prompt into your own AI assistant, and watch it play on your music as the files are saved.
Dynamic Lighting, following the scene
Keyboard, mouse, mousepad, headset and stand take the colours of the Plus scene on the graph.
New in v1.7.4
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.
1.6.2One headset, every machine on your deskLossless · Encrypted · Private LAN
Plus FluidEQ Plus
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.
This browser cannot draw WebGL2, so the scenes stay still here. In FluidEQ they move with your music.
The gallery
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
Highlighted: the categories playing above.
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 colours or its light, and some bring birds, petals or stars that drift gently around the app — what this page is doing now.
Tell your own AI assistant what you want, paste FluidEQ’s prompt, and the scene plays on your music as the files are saved. Projects, a live code pane, test signals, pictures and scene settings share one page.
Any account can make one scene here. With Plus, make as many as you like, publish them to the gallery, share them as files, put them on your desktop — or open one of FluidEQ’s own scenes to see how it is made.
A different scene on each monitor, moving with the music or calmly on its own. It pauses for full-screen apps, a locked PC and battery power, and comes back the next time FluidEQ starts.
Keyboard, mouse, mousepad, headset and stand follow the visualizer on the graph, through Windows Dynamic Lighting and Razer Chroma. Choose Scene, Colour wave, Spectrum or Beat ripple for each visualizer, tune each device, and watch a live preview of your own desk.
Join from the Account panel and Plus members are ranked by hours listened, active days and likes on the scenes they make. It is off unless you join; then one number a day leaves your computer — the minutes of music that played, never what you played.
Plus is joined inside FluidEQ
The FluidEQ Engine
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.
Switch any time from the actions menu. Updating FluidEQ keeps the engine you already have.
Features
Online Media, EQ, DSP, Library and Karaoke share one transport, one volume and one clear signal story. EQ keeps its bands, headphone corrections, voicing and convolution together; under the FluidEQ Engine the DSP rack works on every app.
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
Up to 128 bands, every filter type
Headphone corrections from 6,229 models, voicing, convolution and your own bands, each a layer with its own switch and strength. New in 1.7: EQ mode, band designs, and switching a band off without losing it. Try the layers here.
128bands per output
A nine-stage rack for everything you hear
Normalizer, Denoise, Exciter, Bass Forge, Equaliser, Bass Punch, Dimension, Maximizer and Master. Under the FluidEQ Engine the rack works on everything you hear; under Equalizer APO, on FluidEQ’s own player.
47DSP EQ presets
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
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
No virtual audio device, no telemetry, and no account needed for the free app.
The person behind FluidEQ
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.
My father traveled across provinces to find his kid a better computer. That machine opened a door I never stopped walking through.
MSX-era BASIC led to hand-written Z80 code, then to a lifetime of asking how complex software could feel clear and immediate.
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.
A hidden reward
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.
FluidEQ / v1.7.4
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
FluidEQ PlusPlus
$5a month, or $50 a year · cancel any time
Joined in the app FluidEQ›Account›Plus
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.