Chrome routes audio through the browser’s output at whatever the operating system provides — no equalization, no correction for your headphones, no adjustment for the content type. A 10-band equalizer changes that. SuperchargeAudio inserts a series of biquad filters, letting you raise or cut specific ranges. SuperchargeAudio is free.

Frequency Bands

The equalizer covers the full audible range in one-octave steps:

Each band adjusts from −12 dB (strong cut) to +12 dB (strong boost). At 0 dB the band is neutral and transparent.

Presets

Eleven named presets cover common listening scenarios:

Select a preset as a starting point, then fine-tune individual bands before saving.

Custom Curves Per Site

Every site you visit can carry its own EQ curve. Dial in settings for a music service, a podcast app, and a video conferencing tool separately — SuperchargeAudio loads the right curve automatically based on the site’s hostname.

You can also save your current curve as the global default; it applies to sites without their own curve, and a saved site curve always takes precedence.

Combined with volume boost, you can normalise both loudness and tonal balance without touching any system-level audio settings.

Protected Content

On most sites the EQ runs as an in-page Web Audio filter node. For DRM or CSP-locked sites where that is not possible, an opt-in Protected boost applies the same EQ to the tab’s rendered audio. This is off by default and adjusts only what you already hear — it does not affect content access or DRM protection.

Privacy

All EQ processing is local. Your saved per-site curves are stored in browser extension storage and never leave your device. No audio data is transmitted; no account is needed.

Questions? support@superchargebrowser.com