What is Audio Equalizer?

Shape how your audio sounds with a 10-band equalizer. Slide each frequency band up or down to get more bass, clearer vocals, or brighter highs, then export the result as WAV or MP3.

The ten bands sit at 32, 64, 125, 250, 500, 1k, 2k, 4k, 8k, and 16k Hz, each with ±12 dB of gain. Fourteen one-click presets cover genres like Rock, Pop, Jazz, Classical, Electronic, and Hip-Hop plus use cases like Podcast, Voice Call, Acoustic, and Loudness. Files up to 50 MB load straight into the page, so nothing is uploaded anywhere. Preview the change in real time, then bake the curve into WAV (lossless) or MP3 (compact) — the export keeps the source sample rate and inherits your original filename with a '-eq' suffix.

How to use

1. Upload an audio file (MP3, WAV, OGG) and press play to hear it through the equalizer.
2. Adjust the frequency band sliders (32 Hz to 16 kHz) to shape the sound. Pick one of the fourteen presets — Rock, Pop, Jazz, Classical, Electronic, Hip-Hop, Bass Boost, Vocal Boost, Treble Boost, Podcast, Voice Call, Acoustic, Loudness, or Flat — for an instant starting point.
3. Pick WAV (lossless) or MP3 (compact, shareable) and download the EQ-processed audio with your adjustments baked in.

When to use

• Cleaning up a podcast voice track that has too much low-end rumble or boomy proximity.
• Mastering a song demo so it translates from headphones to a phone speaker.
• Salvaging a phone recording where the speaker sounds muffled or distant.

Result

A podcaster uploads their interview recording, boosts the 2–4 kHz range to add clarity to voices, cuts 200 Hz to reduce room rumble, and exports the enhanced WAV for their episode.

FAQ

Why does the exported file sound slightly different from the live preview?

The preview uses real-time biquad filters at the playback sample rate. The export re-renders the whole buffer offline with the same filter chain, so any rounding drift you hear in playback gets smoothed out.

What format is the exported audio?

You choose: WAV (16-bit PCM, lossless, same sample rate as the source — usually 44.1 or 48 kHz) or MP3 (libmp3lame at quality 2, roughly 190 kbps VBR, much smaller and easy to share). The exported filename keeps the original name with a '-eq' suffix.

Can I undo a band change without resetting everything?

Drag the band slider back to 0 dB, double-click the slider, or click its gain value to zero just that band. The Flat preset resets all ten bands at once. Any other preset (Rock, Pop, Jazz, Classical, Electronic, Hip-Hop, Bass Boost, Treble Boost, Vocal Boost, Podcast, Voice Call, Acoustic, Loudness) overwrites the current curve.

How much can I boost a band before it starts clipping?

Boosting several bands together can push the signal past 0 dBFS and clip. Leave the 'Prevent clipping' limiter on (it's on by default) and the export is scaled down so the loudest peak lands right under 0 dBFS — no distortion. The live frequency-response curve shows how much total gain you've added, so you can also pull bands back by hand if you prefer headroom over a hot signal.

Does the tool work on multi-channel stereo or only mono?

Stereo files keep their two channels. Each channel runs through the same EQ chain, so the stereo image stays intact. Mono files stay mono. 5.1 surround files downmix to stereo on decode.

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