Free EQ plugins for Linux (LV2, VST3 and CLAP)
Mixing on Linux no longer means making do. Ardour, Bitwig and Reaper run natively, the open-source EQs are genuinely good, and more developers ship native Linux builds. The one gap that used to be hard to fill for free was a full-featured dynamic EQ - which is exactly the job this page is about.
Which formats your DAW loads
Linux has three plugin formats in practice. LV2 is the long-standing native Linux format and the home of most open-source plugins. VST3 is the cross-platform standard. CLAP is the newer open format, with sample-accurate automation. Which one you use depends on the host.
- Ardour: LV2 and VST3.
- Bitwig Studio: VST3 and CLAP (no LV2).
- Reaper: VST3 and CLAP.
- Carla can host LV2 plugins inside hosts that can't load them directly.
The open-source EQs worth knowing
x42-eq (fil4) is a clean, CPU-light parametric EQ with a good analyzer, and it ships with many distributions. The LSP Plugins suite includes precise parametric and graphic equalizers. Ardour's own ACE EQ is fine for quick shaping. For static tone work, any of these covers you well.
What they don't give you is a dynamic EQ with many freely placed bands, mid/side on every band and a sidechain input - the tool for de-essing, taming a resonance that only rings on loud notes, and unmasking one track against another.
Installing a native Linux plugin
Most native Linux plugins ship as a .tar.gz. A per-user install puts the files in the standard folders in your home directory - ~/.lv2, ~/.vst3 and ~/.clap - which every host above scans by default. Rescan in your DAW after installing, and close it before replacing files during an update.
- Check the glibc requirement: glibc 2.35 means Ubuntu 22.04, Debian 12, Fedora 36 or newer.
- x86_64 builds don't run on ARM boards like the Raspberry Pi.
- If a plugin window renders black or crashes, try the host under X11; some editors still have Wayland issues.
AURORA - a free dynamic EQ, native on Linux
x86_64 LV2, VST3 and CLAP in a .tar.gz with a per-user install script. Up to 24 dynamic bands, full mid/side, external sidechain, three phase modes and a Smart Ops assistant. The editor renders in software, so it doesn't depend on your GPU driver. Free, no license key.
Is there a free dynamic EQ for Linux?
Yes. TDR Nova has a Linux build with four dynamic bands, and AURORA runs natively on Linux as LV2, VST3 and CLAP with up to 24 dynamic bands and a one-click cleanup assistant. Both are free.
LV2, VST3 or CLAP - which should I use on Linux?
Use what your host prefers. In Ardour, LV2 is the most native choice; in Bitwig and Reaper, pick CLAP where available, then VST3. The sound is identical across formats.
Can I use Windows plugins on Linux?
Bridges like yabridge run Windows VST plugins under Wine, and they work well for many plugins. A native Linux build is simpler and more stable when one exists.