Volume Boost up to 600%
Gain scales from 0× to 6× (0–600%) via the Web Audio API GainNode. Distortion management keeps loud signals listenable. Each site remembers its own level automatically.
Coming to Chrome Web Store
Audio control for every tab.
Finally clean.
Volume boost up to 600%, a 10-band EQ, Smart Mute, and per-site memory — built without the tracking that plagued the category.
Launching on Chrome Web Store Microsoft Edge
SuperchargeAudio
Volume · EQ · Smart mute
Volume130%
0%600%
Stereo widthNormal
8D Audio
Fix one ear
Headphones
Equalizer Bass Boost
Per-site memory
YouTube remembers Bass Boost. Spotify remembers Flat. Teams stays untouched.
Most audio extensions apply one global setting to everything. SuperchargeAudio tracks volume and EQ independently for each site — saved the moment you change them. Switch tabs and the right profile loads automatically. No manual presets to pick each time, no settings that bleed across services.
- Volume level stored per origin — YouTube at 130%, Spotify at 85%, Discord at 100%
- EQ curve saved per site — apply Bass Boost to music, Vocal/Voice to podcasts
- Global default curve applies automatically to any site without a saved override
youtube.com Bass Boost 130%
open.spotify.com Flat 85%
podcasts.apple.com Vocal/Voice 110%
meet.google.com Vocal/Voice 100%
Live demo — no install needed
The actual EQ — playable in your browser.
Same 10-band EQ the extension uses — same frequencies, same preset curves. Press play, drag a band, load Bass Boost. Best with headphones.
SuperchargeAudio LIVE DEMO
Volume boost 100%
0%100%300%600%
Frequency response
32
64
125
250
500
1k
2k
4k
8k
16k
Spatial
Press play, then drag a band or load a preset — this is the real engine.
Everything your tabs were missing.
One lightweight extension for volume, tone, space, and silence — all stored per site.
10-Band EQ
32 Hz to 16 kHz, ±12 dB per band. Ten presets ship out of the box: Flat, Bass Boost, Vocal/Voice, Treble, Loudness, Rock, Pop, Electronic, Acoustic, and Small Speakers. Set a global default or override per site.
Smart Mute
Auto-mutes background tabs when you switch away; unmutes on focus. Silent mode, exclude-pinned option, and a per-site whitelist / blacklist give you full control over what gets silenced.
Space
Stereo Width
Adjust stereo width from 0% (mono) to 200% (ultra-wide). Collapses to mono for single-earbud listening; expands for music that benefits from a wider image.
Fix One Ear
Merges both channels into mono. Useful for uneven hearing, a single earbud, or recordings with unbalanced stereo — keeps everything audible in both ears.
8D Audio
Rotates the stereo image on a ∼12.5-second cycle using ITD (inter-aural time delay, 0–6 ms) and anti-phase processing. Creates a spatial effect designed for headphone listening.
Bauer Crossfeed
Crossfeed mixes a fraction of each channel into the other, simulating how speakers interact in a room. Reduces ear fatigue on hard-panned recordings — particularly noticeable on older rock and classical recordings.
Control
Smart Mute
Auto-mutes background tabs when you switch away; unmutes on focus. Silent mode, exclude-pinned option, and a per-site whitelist / blacklist give you full control over what gets silenced.
Audible-Tabs Panel
See every tab currently making sound in one list. Switch to any of them, mute individually, or drag a per-tab volume slider without leaving your current tab.
DRM Tab Capture
Opt-in “turn on capture” per tab brings boost and EQ to DRM-protected sites like some streaming services. Off by default, per tab only.
Smart Mute
One tab plays.
One tab plays.
The rest stay silent.
Open twenty tabs and only the one you're looking at makes sound. Switch away and it mutes; switch back and it returns. The audible-tabs panel shows everything making noise — switch, mute, or set a level without leaving your page.
600%
Max volume boost
200%
Stereo width range
Zero
webRequest access
SuperchargeAudio
Volume · EQ · Smart mute
Volume130%
0%600%
Audible tabsMute all
Lo-fi beats to focus youtube.com
130% Liked Songs open.spotify.com
85% Standup meet.google.com
100% Stereo widthNormal
8D Audio
Fix one ear
Headphones
Equalizer Bass Boost
Bass Boost
Save as default
+10 32
+9 64
+6 125
+3 250
0 500
0 1k
0 2k
-1 4k
-2 8k
-3 16k
Provably clean
Built to touch audio and nothing else — permissions you can verify.
In January 2026, a 20-million-user volume booster was caught injecting affiliate popups and running tracking via webRequest. Several others in the category had undisclosed C2 connections. SuperchargeAudio was built from the start with a different constraint: touch audio, nothing else. The permission set reflects that. Storage, tabs, tabCapture, and offscreen — no webRequest. The extension cannot intercept or modify network traffic. Full stop.
- No webRequest permission — cannot intercept or rewrite network requests
- tabCapture used only for opt-in DRM tab processing, never for surveillance
- Zero telemetry, no analytics, no account required
- All audio processing runs locally via the Web Audio API
- Source is auditable — permissions match exactly what the code does
Frequently asked questions
Does SuperchargeAudio work on Microsoft Edge?
Yes. Edge is Chromium-based and supports the same Web Audio API and extension APIs. SuperchargeAudio will be available on the Microsoft Edge Add-ons store alongside Chrome Web Store at launch — same features, same permissions, same codebase.
What permissions does it request, and why?
Four permissions: storage (saves your per-site settings locally), tabs (detects which tab is active for Smart Mute), tabCapture (opt-in capture for DRM-protected sites like some streaming services), and offscreen (runs the audio processing document for captured tabs). There is no webRequest permission. The extension cannot read, intercept, or modify network traffic of any kind. The extension also requests access to the audio on pages you visit — that site-access permission is the only way to adjust a page’s sound, and it is used for nothing else.
Is it free?
Yes. SuperchargeAudio launches free, with no account required. All core features — volume boost, EQ, Smart Mute, per-site memory, stereo tools — are included. The plan is to keep the core free permanently.
Does it work on YouTube and Spotify?
Yes on both, with a note on Spotify: because Spotify Web uses DRM-protected audio, it requires the opt-in “turn on capture” mode per tab (tabCapture). YouTube, Twitch, Discord, Google Meet, and Microsoft Teams all work without any extra steps. Locally hosted audio and most other sites work out of the box.
What does 8D audio actually do, and does it help?
8D audio rotates the stereo image using inter-aural time delay (ITD) — a 0–6 ms phase shift between channels on a ∼12.5-second cycle. It creates the impression of sound moving around your head. Some people find it engaging for music; others find it distracting. It is designed for headphone use. For single-earbud listeners, Fix One Ear (mono merge) is more practical.
What is per-site memory and why does it matter?
Per-site memory means SuperchargeAudio stores your volume level and EQ curve separately for each website. YouTube at 130% volume with Bass Boost, Spotify at 85% with Flat, Teams at 100% with the Vocal/Voice preset — all saved automatically the moment you change them. Switch between tabs and the right profile loads without any manual switching. As of May 26, this works across Chrome sessions too.
Launching on Chrome Web Store soon.
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