The latest free equalizer for PC. Pick the build that matches your Windows installation and get system-wide audio improvement in minutes.
Three builds are available. The vast majority of users want the 64-bit installer. Check Settings → System → About if you need to confirm your system type before downloading.
EqualizerAPO64-1.4.2.exe
The right choice for virtually every modern Windows PC running on an Intel or AMD processor. This is the equalizer apo download that the overwhelming majority of people need for Windows 7 through 11.
↓ Download 64-bitEqualizerAPO-ARM64-1.4.2.exe
Built for Windows 10 and 11 devices running ARM processors — Surface Pro X, Snapdragon-powered laptops, and similar hardware. VST plugin support is limited to native ARM64 VST plugins with this build.
↓ Download ARM64EqualizerAPO32-1.4.2.exe
Only needed on a 32-bit edition of Windows, which is uncommon on modern hardware. If System type says "64-bit operating system," use the 64-bit installer instead.
↓ Download 32-bit🛡 All installers are clean — no bundled software, no adware, no browser toolbars.
Released March 21, 2025. This version brings ARM64 hardware support, several Windows 11 bug fixes, and improved compatibility with third-party tools.
The equalizer for PC has modest requirements that virtually any Windows machine meets without issue.
Windows Vista through Windows 11. ARM64 builds require Windows 10 or newer. All mainstream editions (Home, Pro, Enterprise) are supported.
Any Intel, AMD, or ARM64 processor. No minimum clock speed — the CPU load from the equalizer is negligible in normal use.
No specific minimum. Equalizer APO uses only a few megabytes of memory regardless of how many filters are active or what sample rate you're running.
Driver must support Windows Audio Processing Objects. Covers virtually all onboard audio and most dedicated cards. ASIO-only drivers are not compatible in exclusive mode.
Under 30 MB for a full installation. Configuration files are plain text and add negligible size even after years of use.
Required for installation only. After setup the equalizer runs as part of the Windows audio service with no ongoing elevated privileges needed.
A note on the architecture: the equalizer apo is not a standalone application in the traditional sense. It's an Audio Processing Object — a component Windows loads directly into its audio rendering pipeline. This is what gives it system-wide reach and low overhead, but it also means a reboot is required after installation. Applications that bypass the Windows mixer (ASIO, WASAPI exclusive mode) won't be processed — this is a Windows architecture constraint, not a deficiency in the equalizer. For gaming, streaming, music playback, video, and voice chat running in standard Windows audio modes, it works perfectly and invisibly every single time.
From downloaded file to working equalizer in four steps. Follow this order precisely to avoid the most common setup mistakes.
Choose x64, ARM64, or x86 from the cards above. Unsure which? Press Win + Pause Break or go to Settings → System → About and read the System type line. "64-bit operating system, x64-based processor" means x64. "ARM-based processor" means ARM64. 32-bit Windows is x86.
Right-click the downloaded file and choose "Run as administrator" if the prompt doesn't appear automatically. Accept the license agreement, keep the default path, and continue until the Configurator window appears. Don't close it — that's where you select which devices the equalizer will process.
Check boxes next to each device you want processed — at minimum your default playback device. Do not blindly check all devices; virtual audio devices like VoiceMeeter can behave unexpectedly. After selecting, click OK. You can reopen the Configurator from the Start Menu later to add or remove devices.
Restart your computer. After rebooting, open the Configuration Editor from the Start Menu. Play any audio — a slight volume change confirms the apo equalizer is active. You're now ready to build your first filter chain. See the usage guide on the home page for next steps, or explore the Peace Equalizer page for a graphical interface upgrade.
The equalizer apo download is straightforward, but some background helps you sidestep the handful of traps that catch first-time users. The most critical thing to understand is that the equalizer installs as a Windows Audio Processing Object — a component the Windows audio engine loads into its rendering graph. This means it affects every application simultaneously without any per-app setup. Gaming, streaming software like OBS, video players, voice chat apps, browser audio — all of it passes through the equalizer unless the application deliberately bypasses Windows audio, which is uncommon in consumer software.
The version history can be confusing if you've seen older tutorials. The current stable build is 1.4.2, released March 2025. Older guides covering versions 1.3.x are still valid for the main workflow — the Configuration Editor and file format haven't changed substantially — but 1.4.2 fixes several Windows 11-specific issues that make the upgrade worthwhile for anyone on a newer machine. Bluetooth audio processing failures and the AVX crash in particular are addressed in this release. If you're on Windows 11 and experiencing oddities with an older install, upgrading often solves things outright without any other intervention.
For streamers and content creators, the equalizer apo is especially valuable on the microphone side. Many USB microphones and webcam mics have pronounced frequency quirks — a boxy resonance around 250–400 Hz, a harsh peak in the 2–4 kHz range, or a lack of air above 8 kHz. A few targeted cuts and boosts can make a budget microphone sound significantly more professional on streams and recordings, with no additional hardware and at zero cost. The change is reversible too — if you don't like what you've done, delete the configuration and start fresh.
The equalizerapo project is licensed GPL v2, which means you can use it commercially, inspect the source code, and share modified versions freely. Jonas Thedering and the contributing community have put genuine care into both the functionality and the codebase. The result is one of the standout examples of what free, open-source audio software can look like when built with real engineering rigour.