DFX Audio Enhancer Is Now FxSound: Free Sound Booster for Windows (2026)
Remember DFX, the plugin that made Windows Media Player music sound fuller with bass boost, 3D surround and ambience? We tried it back in 2005 from Microsoft’s WMP plugins page and loved how one “Power” button improved MP3s, though the best effects needed a paid upgrade. DFX lives on as FxSound, and the good news for 2026 is that it’s now completely free and open source, and works with everything you play on Windows.
Quick answer: DFX Audio Enhancer was renamed FxSound. It became free in 2022 and open source in 2023. Install FxSound on Windows to boost bass, clarity, surround and volume for all audio, including Spotify, YouTube, games and video calls, not just Windows Media Player. There’s no Mac version; Windows 11 also has built-in audio enhancements and Spatial Sound.
Table of Contents
What DFX / FxSound does
- Bass boost for thin laptop speakers and earbuds.
- Clarity and fidelity to restore detail in compressed music.
- Ambience and 3D surround for a wider, roomier sound.
- Dynamic boost to raise quiet audio without distortion.
- Presets and EQ for music, movies, gaming, voice and more.
Unlike the old WMP plugin, FxSound works system-wide, so it improves audio from any app.
How to install FxSound
- Download it from the official FxSound website (external site).
- Run the installer; it adds an FxSound audio device.
- Open FxSound and pick a preset, such as Music or Movies.
- Adjust the sliders for clarity, bass and ambience until it sounds right to you.
- Use the power button to compare with and without effects.
Which FxSound preset to use
- Music: balanced boost for everyday listening on headphones or speakers.
- Movies and TV: clearer dialogue with a wider soundstage.
- Gaming: stronger surround cues so you can hear footsteps and direction.
- Voice or podcasts: boosts speech clarity for calls, audiobooks and lectures.
- Bass boost: for small laptop speakers, but keep it moderate to avoid rattling.
FxSound troubleshooting
- No sound after installing: open Windows sound settings and make sure your real speakers or headphones are selected as FxSound’s output device.
- Sound is distorted: lower the bass and dynamic boost sliders or system volume.
- Effects stopped working after an update: reinstall FxSound or restart the audio service by rebooting.
- Bluetooth headphones: reconnect them, then select them again inside FxSound.
Free alternatives built into Windows
- Audio enhancements: Settings > System > Sound > your device > Audio enhancements (options depend on your sound driver).
- Spatial sound: Windows Sonic for Headphones adds virtual surround.
- Loudness equalisation: evens out volume between quiet and loud audio on many devices.
- Equalizer APO is a popular free, more technical system-wide EQ.
Tips for better PC sound
- Use good headphones or external speakers; no software can fully fix tiny laptop speakers.
- Stream at the highest quality your music service allows.
- Don’t max out every slider; heavy boosting causes distortion and listening fatigue.
Need light, free apps for your PC? See our list of small free software for Windows, including the featherweight XMPlay music player.
FAQ
Is FxSound really free?
Yes. FxSound made the full app free in 2022 and supports it through optional contributions.
Is FxSound the same as DFX?
Yes. FxSound is the renamed DFX Audio Enhancer from the same developers.
Does FxSound work on Mac or phones?
No. It’s Windows only for now.
Stuck on a gift? Try our free Gift Idea GeneratorIdeas for anyone by age, job, interests and budget, with Amazon.com and Amazon.in linksFind gifts →Get our free weekly email: new tech guides and tools, no spam.
New and updated tech guides, a free tool worth bookmarking and one useful pick, once a week. No spam, unsubscribe anytime.
One email a week. Unsubscribe anytime. See our privacy policy.
By the way i don’t promote piracy (don’t give me no crap)..if u guys want to get ur hands on full version why don’t u visit 9down.com and search for dfx with keygen..but before extracting files make sure ur antivirus (especially norton) is turned off until the keygen is extracted and the files are patched..norton and some other antivirus identify keygens as trojans..i dunno why..
As David said after adding Dfx 9 plugins to my windows media player 11, the media player crashed showing the same error message. I have been looking for workarounds but still haven’t been successful, all i can do now is disable plugins and run the windows media player.
Has anyone found any solution? will be glad if they shared..
thnx
easy to use and sound is excellent.
Dfx really does enhance your sound but unless you pay for it, it reloads itself at every song change. This is a waste of resources, as well as annoying, as it pops up for you to adjust it’s settings every time. I like dfx, but I’m not going to use it anymore for this reason. I’m looking into Izotope OzoneMP as an alternative
closed
.this plugin is very nice. sound is excellent.
After adding Dfx to my wmp 11 plugins at initally recieve this message”media foundation pipeline exe has stopped working”. After that it appears and I restart the program the player appears to play but I hear no sound.
this is very good
yes media player 11 is a cool app
it was nice experince using media playert 11.
Yeah I did use DFX for WMP but I think its time to move on. I think Izotope OzoneMP is the best utility. Try it out..