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Full · Precise

SuperchargeAudio — Volume, EQ, and Spatial Controls for Every Tab

Audio v1.0.0 Pending review

SuperchargeAudio brings granular audio control to every browser tab. Boost volume beyond the browser's 100% limit, shape sound with a 10-band equalizer, and widen or narrow the stereo field — all without leaving the browser. Smart mute keeps background tabs silent while you focus on the active one, and per-site memory means your preferred settings apply automatically every time you return to a site. For DRM-protected streaming sites where in-page audio processing is not permitted, an optional tab-audio-capture mode applies the same controls to the tab's output.

  • Volume boost up to 600% — well beyond the browser's built-in limit
  • 10-band equalizer, ±12 dB per band, with named presets and a custom mode
  • Bass boost, mono downmix, stereo width, and 8D rotating-pan effect
  • Headphone crossfeed for more natural headphone listening
  • Smart mute — auto-mutes background audible tabs to keep audio focused
  • Per-site memory — settings persist per website and auto-apply on return
  • Audible-tabs list — see and control every tab currently playing audio
  • Works on DRM-protected streaming sites via optional tab-audio-capture mode
  • 100% local, no account, no telemetry

Volume and Equalizer

The browser’s built-in volume tops out at 100%. SuperchargeAudio extends that range to 600% — useful when a video is recorded quietly, a podcast is mixed low, or a call is hard to follow at max system volume.

The 10-band equalizer spans 32 Hz to 16 kHz, with ±12 dB of adjustment per band. Named presets cover common listening scenarios — Bass Boost, Vocal/Voice, Treble, Loudness, Rock, Pop, Electronic, Acoustic, and Small Speakers — or set your own curve and save it per site.

Bass boost adds a dedicated low-end lift on top of the EQ, independently adjustable.

Spatial and Headphone Controls

Four controls shape how audio sits in space:

  • Mono downmix collapses stereo to center — useful when one channel is missing or when you need a clear, undistorted mono reference.
  • Stereo width spans from the mono mix up to an ultra-wide field. Useful for widening cramped-sounding stereo or tightening content that feels too spread.
  • 8D rotating pan applies a slow rotating-pan effect — the kind used in immersive listening edits.
  • Headphone crossfeed blends a small amount of each channel into the other. Headphones place audio hard inside your head; crossfeed moves it slightly forward, closer to how speakers in a room sound.

Smart Mute and Per-Site Memory

Smart mute watches for background tabs playing audio and mutes them automatically so only the active tab is heard. A silent mode extends this further, muting all tabs including the active one — useful when you need complete quiet without closing everything.

Per-site memory stores your volume level, EQ curve, and channel settings for each website. Return to a site and your settings apply without touching anything.

The audible-tabs list in the popup shows every tab currently playing audio. Click any entry to switch to it or mute it directly.

Protected and DRM-Restricted Sites

On most websites, SuperchargeAudio works by inserting a gain node directly into the page’s Web Audio graph — no capture, no extra permissions.

Some streaming services use DRM or strict content security policies that prevent in-page audio processing. For these sites, an optional tab-audio-capture mode routes the tab’s audio output through the extension’s processing chain instead. The audio controls work the same way; the content itself is untouched. This mode does not remove or modify content access in any way — it only adjusts what you hear.

Tab-audio-capture requires granting audio capture permission when first enabled. It is off by default and must be opted into per-session.

Privacy

All audio processing runs locally in your browser. No audio data leaves your device, no account is required, and no usage telemetry is collected.