Double Headphones

Share audio to multiple headphones simultaneously on Windows
No drivers. No complexity. Just click and listen.

 

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The Problem

You're on a train with your partner. You want to watch a movie together on your laptop. But Windows only plays audio through one device at a time.

Your options? Share one pair of earbuds (uncomfortable). Use a splitter cable (who carries those?). Let one person use the laptop speaker (everyone on the train hates you).

The Solution

Double Headphones captures your system audio and routes it to two or more output devices at the same time. Bluetooth, wired, USB — any combination works.

1. Connect both headphones
2. Select them in the app
3. Click Share Audio
4. Both headphones play the same audio, in sync

That's it. When you stop sharing, everything goes back to normal automatically.

Features

• Multi-device output — play audio on 2+ devices simultaneously
• No drivers required — pure Windows APIs, nothing to install
• Dead simple — three dropdowns and one button
• Any headphones — Bluetooth, wired, USB DACs, speakers, any mix
• Per-device volume — adjust each output independently
• Latency compensation — align Bluetooth with wired using a 0–2 second delay slider (type an exact value too)
• Crash-safe — if the app crashes, your audio restores automatically
• System tray — minimize and forget about it
• Lightweight — under 5% CPU
• Free forever — no ads, no telemetry, no tracking, no trial

Download

Download DoubleHeadphones.exe (Windows 10/11, 64-bit)

Single portable .exe — no installation needed. Just download and run.

System Requirements

	Minimum
OS	Windows 10 (build 20348+) or Windows 11
Arch	64-bit (x64)
Audio	Two or more output devices connected

FAQ

Why do I hear audio from my laptop speakers?

You shouldn't. When one of your chosen outputs is also your Windows default device, the app quietly hands the default off to a spare output and mutes it, so nothing leaks out. If your machine has no spare device to hand it to, that one output plays normally and the app tells you — set a different device as your Windows default to silence it.

Netflix/Disney+ audio is silent

Streaming apps with DRM block audio capture. Use Chrome instead of the native Windows app — it works perfectly.

Audio is out of sync with video

Bluetooth adds 150-250ms of latency. Use the latency slider in the app, or adjust audio delay in your video player (VLC: press J/K).

Two Bluetooth headphones are stuttering

Two Bluetooth devices at once usually works fine — it's the whole point of the app. If you do hit stutters, moving the headphones closer to the PC helps most. On rare setups where a single built-in adapter can't keep up with two streams, a spare USB Bluetooth adapter (~$10) removes the bottleneck.

Can I use more than 2 devices?

Yes — the architecture supports unlimited devices. The current UI shows two, with more planned.

Known Limitations

• DRM content (Netflix app, Edge) — use Chrome as workaround
• Bluetooth latency (150-250ms) — physics, use the latency slider
• Dual Bluetooth — works on most setups; a rare built-in adapter may stutter (move devices closer, or add a spare USB adapter)
• Windows 10 before build 20348 — required API not available

Support Development

Double Headphones is free forever. If it saves you from sharing earbuds on your next trip, consider buying me a coffee.

License

Proprietary — free for personal use. See LICENSE for details.

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Built with ♥ for couples who travel together