Online Equalizer
An equalizer changes how loud individual frequency ranges are, rather than moving the whole signal together. This one gives you five bands — sub-bass, bass, mids, presence and treble — each adjustable by ±12 dB, with a gain stage and limiter after them.
Shape your sound
Drop an audio or video file here, or choose one. It is processed on your device and never uploaded.
Processed on your device — nothing is uploaded. Loud audio can damage hearing: lower your system volume before boosting, then raise it gradually.
What each band controls
| Band | Centre | Raise it to | Lower it to |
|---|---|---|---|
| Sub | 60 Hz | Add weight and rumble | Clean up boom and remove handling noise |
| Bass | 250 Hz | Add warmth and body | Remove muddiness and boxiness |
| Mid | 1 kHz | Push vocals and instruments forward | Create space, reduce honkiness |
| Presence | 4 kHz | Improve speech clarity and detail | Soften harshness and sibilance |
| Treble | 10 kHz | Add air and sparkle | Reduce hiss and brittleness |
Cutting usually beats boosting
The instinct is to boost the range you want more of. Experienced engineers more often cut the ranges competing with it. If a voice is buried, reducing 250 Hz on the music often does more than raising 4 kHz on the voice, because it removes the thing that was masking it rather than piling more energy on top.
Cutting also preserves headroom. Every boost eats into the space before clipping, so a heavily boosted EQ curve forces you to reduce the output gain anyway. Cutting has the opposite effect.
If you are unsure whether you want an EQ or a straight boost, volume booster vs equalizer lays out the difference.
Frequently asked questions
Can an equalizer make audio louder?
Indirectly. Boosting a band adds energy in that range, which raises the overall level somewhat, and lifting the presence range can make speech feel much clearer without being measurably louder. But if everything is uniformly quiet, gain is the more direct tool.
What do the ± numbers mean?
Decibels of boost or cut at that band centre. ±3 dB is a subtle adjustment, ±6 dB is obvious, ±12 dB is dramatic and easy to overdo.
Why does boosting bass cause distortion?
Low frequencies carry a lot of energy. A +9 dB bass boost can push peaks well past the ceiling, and small speakers or earbuds may also physically run out of excursion. Reduce the output gain to compensate.
Related pages
- Audio ToolsBass BoosterA low-shelf filter that lifts everything below the cutoff — weight without muddiness.
- Audio ToolsTreble BoosterA high-shelf filter for muffled recordings — clarity rather than volume.
- LearnWhat is an equalizerFilters that change the balance between frequencies.
- ComparisonsBooster vs equalizerOne raises everything, the other changes the balance.
- ComparisonsBass booster vs EQA bass booster is one band of an equalizer, made simpler.
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