Want to watch Netflix and have sound come out of both your headphones and your Bluetooth speaker at the same time? Or set up a silent disco where everyone hears the same music through their own headphones? Or route your Zoom meeting audio to a conference room speaker while you keep your headphones on?
By default, Chrome only plays audio to one output at a time. But there's a simple solution — a free Chrome extension called Audio Splitter that lets you route one tab's audio to as many Bluetooth devices as you want, simultaneously.
🎧 TL;DR: Install Audio Splitter, click "Capture This Tab," add your second Bluetooth device, toggle it ON. Done — both outputs play at the same time.
Chrome routes all tab audio to whichever device you've set as your system default. Even if you have three Bluetooth speakers paired to your laptop, only one gets the audio. This isn't a bug — it's how the operating system audio stack works.
Audio Splitter works around this by capturing the tab's audio stream via Chrome's tabCapture API and feeding it through the Web Audio API — which can create multiple outputs to different audio devices simultaneously. No drivers, no virtual cables, no VoiceMeeter.
Headphones on + room speaker on — everyone hears, no one shares earbuds
Everyone gets their own Bluetooth headphones at their own volume. Mute the internal speaker.
Route audio to your Bluetooth hearing aid AND the room speaker simultaneously
Route meeting audio to headphones + a Bluetooth speaker on the conference table
Play Spotify to multiple Bluetooth speakers in different rooms from one tab
AirPods + over-ear headphones at the same time — different volumes for each
Two people watch different movies simultaneously — one on the laptop screen, the other on a TV via Chromecast or Apple TV. No second device needed.
A/B between studio monitors and headphones, apply per-output EQ, route bass to a subwoofer — replaces $200+ hardware monitor controllers.
💡 Silent disco tip: For true silent disco mode, make sure your system's default audio output is set to your internal/built-in speakers, then mute the Default device row in the extension. This silences the laptop while all Bluetooth headphones continue to play.
One of the most surprising use cases: two people sharing one laptop, each watching a completely different movie at the same time.
Open Movie A in one Chrome tab and Movie B in another. Use two Chrome instances (Chrome + Chrome Canary, or two Chrome profiles) — each runs its own Audio Splitter. Route Movie A's audio to headphones for the person on the laptop screen, and route Movie B's audio to a Chromecast or Apple TV for the person watching on TV. Each person hears their own movie with no crossover.
Audio Splitter Max (the desktop app) doubles as a software monitor controller for browser-based listening — replacing hardware units like the Mackie Big Knob ($199) or PreSonus Monitor Station ($299):
For reference listening from Chrome (YouTube, SoundCloud, Spotify Web), it covers the essentials at a fraction of hardware cost.
Yes — if you use the browser version. Open your meeting at app.zoom.us, meet.google.com, or teams.microsoft.com, then follow the same steps above. The extension captures all audio playing in the tab, including WebRTC call audio.
Note: the Zoom/Teams desktop app is not a browser tab and cannot be captured.
Lite — Free. 2 output devices, stereo mode, volume & delay controls. Great for dual headphones, Netflix + speaker, silent disco for two.
Pro $9.99 one-time — 5 output devices, channel split modes (Left Only, Right Only, Bass Sub, Vocals), unlimited capture time. Ideal for silent disco parties and multi-room audio.
Max $19.99 one-time — Desktop app (Mac + Windows). Unlimited devices, 5-band EQ per device, virtual audio input (BlackHole / VB-Cable), full-screen visualizer. For power users and home studio setups.
Lite version · 2 devices · No account · No data collection
🔊 Get the ExtensiontabCapture and AudioContext sinkId) that Firefox doesn't support. It works on any Chromium-based browser: Chrome, Edge, Opera, and Brave.→ See all 17 use cases · Audio Splitter extension page · GK Works Labs