Online Audio Equalizer
Shape the bass, mids, and treble of any audio file with a 5-band parametric EQ — live response curve, presets, and instant preview, all in your browser. No sign-up, and your file is never uploaded.
How to EQ Audio Online
No account, no upload — three steps on your own device.
Drop Your Audio
MP3, WAV, M4A, FLAC, OGG, or AAC up to 200 MB. It decodes right in the browser and shows the waveform.
Shape the Tone
Pick a preset or drag the five band sliders while the response curve redraws. Hit play to preview the EQ on your file.
Apply & Download
Click Apply EQ, listen to the result, and download it as an MP3 at the bitrate you choose — no queue, no watermark.
Why Notevibes Audio Equalizer
A real parametric EQ — not three fixed “bass / mid / treble” knobs.
Five Bands, Real Control
A low shelf at 80 Hz, peaking bands at 250 Hz, 1 kHz, and 4 kHz, and a high shelf at 10 kHz — each with up to ±24 dB of boost or cut.
Live Response Curve
Watch the combined frequency response redraw from 20 Hz to 20 kHz as you drag the sliders — you see exactly what the EQ is doing.
Preview Before You Commit
Play your file through the current EQ settings before applying anything. Tweak, listen again, and only render when it sounds right.
Presets That Make Sense
Voice Clarity, Warm, Bright, and Telephone give you a proven starting point — or start from Flat and dial in your own shape.
Never Uploaded
The EQ runs entirely in your browser. Your file never leaves your device — there is nothing to delete because nothing was sent.
Free, Anywhere
No watermark, no sign-up, no daily limits. Works on phones, tablets, and laptops in any modern browser.
Nothing to Upload, Nothing to Leak
The EQ runs on your own device. Your file never touches a server — which is a stronger promise than any “we delete it later”.
No Upload
Decoding, preview, and rendering run on your device
No Account
Start equalizing immediately
Works Offline
Once the page loads, no connection needed
What People EQ
One tool for every “this sounds muddy / dull / harsh” moment.
Podcast Voice Shaping
Cut the mud around 250 Hz and add presence at 4 kHz
Audiobook Narration
Warm up a thin-sounding read without making it boomy
Muffled Recordings
Brighten dull voice memos and lecture recordings
Music Tone Shaping
More low end, scooped mids, or extra air on a track
Voiceover for Video
Match dialogue tone to the rest of your mix
Sound Design FX
The Telephone preset turns any voice into a phone call
Fix the Tone Without Opening a DAW
You recorded something and it doesn’t sound right — the voice is muddy, the music is dull, there’s too much boom or not enough sparkle. The usual advice is to install an audio workstation and learn what a shelf filter is. This equalizer skips all of that: drop the file, drag five sliders while you watch the curve and listen to the preview, download the result.
Five sliders that map to real problems
Each band sits where common problems live. The 80 Hz shelf controls boom and rumble. 250 Hz is where recordings get muddy. 1 kHz is the body of a voice, 4 kHz is presence and clarity, and the 10 kHz shelf is air and brightness. Boost or cut each by up to 24 dB — enough range to rescue a bad recording, not just polish a good one.
Presets when you don’t want to think in hertz
Voice Clarity is the classic podcast fix — less mud, more presence. Warm smooths a bright, brittle recording. Bright wakes up a dull one. Telephone is the band-passed “phone call” effect for sound design. Every preset is just a slider position, so you can start from one and keep adjusting. Under the hood it’s the same parametric EQ that powers the Notevibes audio editor, running through your browser’s built-in audio engine.
A music, voice, and MP3 equalizer in one
The same five bands handle whatever you throw at them. On a song, pull down the low shelf to tame boomy bass or lift the high shelf to brighten a dull mix. On a voice recording, cut the mud and boost presence until a podcast or voice-over sounds clear instead of boxy. And because an MP3 goes in and an MP3 comes back out, this one equalizer website covers the music, voice, and MP3 jobs that usually get split across three different apps.
Free, private, and instant
Because the processing happens on your device, there’s nothing for us to meter or store: no upload, no queue, no watermark, no sign-up, files up to 200 MB. Preview as many times as you like and download the moment it sounds right.
When one slider is enough — or not enough
If you only need more low end, the one-click bass booster is faster, and the treble booster does the same for brightness. Harsh “S” sounds are a job for the de-esser. And when the file needs cuts, mixing, or AI cleanup on top of tone, open it in the online audio editor.
Need to Do More Than EQ?
The full Notevibes editor trims, mixes, cleans up, and applies AI tools to your audio — then exports to MP3 or WAV.
Free to try · No credit card required
Related Audio Tools
More free AI audio tools from Notevibes — same engine, no sign-up.
Bass Booster
Add clean low-end punch to any track.
Treble Booster
Brighten dull recordings with a high-shelf boost.
High-Pass Filter
Cut low-frequency rumble below a chosen frequency.
Low-Pass Filter
Cut high-frequency hiss and harshness above a cutoff.
Audio Compressor
Even out loud and quiet parts with dynamics compression.
Voice Enhancer
One-click clarity chain for muffled voice recordings.
Audio Equalizer FAQ
Is this a free online audio equalizer?
Yes — completely free, with no sign-up, no watermark, and no daily limits. Drop in an MP3, WAV, M4A, FLAC, OGG, or AAC file up to 200 MB and EQ it right in your browser.
How are the 5 bands set up?
Band 1 is a low shelf at 80 Hz, bands 2–4 are peaking filters at 250 Hz, 1 kHz, and 4 kHz, and band 5 is a high shelf at 10 kHz. Each band has a gain slider from −24 to +24 dB, which covers the audible range with one band per region: bass, low mids, mids, presence, and air.
Is this a graphic equalizer?
It's a parametric equalizer — instead of the many fixed sliders of a graphic EQ, you get five bands placed where problems actually live: a low shelf, three peaking mids, and a high shelf. If you're searching for a graphic equalizer online, this does the same job with fewer, smarter controls.
How do the presets work?
Presets are starting points that set all five bands at once. Voice Clarity cuts mud and boosts presence for podcasts, Warm adds low-mid body, Bright adds high-shelf air, Telephone band-passes the voice for a phone-call effect, and Flat resets everything to zero. Pick one, then keep tweaking the sliders.
Can I hear the EQ before applying it?
Yes. Hit play in the EQ panel and your file plays through the current settings in real time. The response curve updates as you drag, and nothing is rendered until you click Apply EQ.
Is my audio file uploaded to a server?
No. The equalizer decodes, previews, and renders your file entirely in your browser. Your audio never leaves your device — nothing is uploaded, stored, or analyzed.
What format is the download?
The EQ'd file downloads as an MP3, and you pick the bitrate — from 64 up to 320 kbps, with 192 kbps as the default. That plays everywhere: phones, car stereos, editing software.
Does it work on mobile?
Yes — Chrome, Firefox, Safari, and Edge on both desktop and mobile. Very long files render faster on a laptop simply because the processor is faster, but the tool is the same.