Hi, I’m Abder, and I make Two Headphones.
It started on a flight to Southeast Asia with my girlfriend, trying to watch YouTube together on one laptop. Yes, some planes have Starlink now! The missing piece was getting one laptop’s audio into both our headphones, because Windows only plays through one pair at a time. So I built the little app I wished I had.
What I learned building it
Copying sound to a second pair of headphones turns out to be the easy part. The hard parts are the ones you only notice ten minutes into a film:
- Devices drift apart. Every audio device has its own clock, and no two run at exactly the same speed. Two Headphones measures that and keeps them locked together.
- Bluetooth is late. Each output gets a delay control, and sensible starting values for wired and Bluetooth.
- Drivers disagree. The same Windows setting behaves differently from one audio driver to the next, so the app checks how yours behaves instead of guessing.
- Your settings matter. The app always puts your sound setup back when you stop sharing.
The guides on this site are everything I learned along the way, including the free methods. If a $5 splitter solves your problem, buy the splitter.
Get in touch
Questions, bugs or ideas: email abouyaala.abderrazzak@gmail.com or find me on X at @abdeeeer.
