How to Play Audio on Two (or More) Devices at the Same Time on Windows

Windows makes you pick one audio output at a time. But plenty of times you want the same sound playing on more than one device at once — your laptop speakers plus a Bluetooth speaker to fill a room, or two headphones so you and a friend can watch the same thing. Here's every way to do it, from the built-in tricks to the simplest option.

The built-in Windows ways (and their catch)

Stereo Mix + "Listen to this device." Open the Sound Control Panel, go to the Recording tab, enable Stereo Mix, open its Properties → Listen tab, tick "Listen to this device," and pick a second output. It works on some PCs — but not all sound cards expose Stereo Mix, and it usually adds a noticeable delay, so the two devices drift out of sync and you hear an echo.

Windows 11 "shared audio." Newer Windows 11 builds have a genuine first-party version of this: open Quick Settings, and if your machine supports it you can send audio to two Bluetooth devices at once. No downloads, no drivers, a couple of clicks. When it's available it's the obvious thing to try first, and it's free.

The catch is eligibility, and it's a real one. It shipped on Copilot+ PCs and newer Bluetooth stacks, so most machines in use today simply don't offer it — and if you don't see it in Quick Settings there is no download that adds it, because it's a hardware and Windows-build requirement rather than a feature flag. It's also two devices, both Bluetooth: you can't include your laptop speakers or a wired pair, which rules out one of the most common setups ("one Bluetooth, one wired"). And it aligns the two devices when it starts, but doesn't keep correcting as they drift apart, so a long film can still end up out of step. Check Quick Settings before paying for anything — including ours.

Why does this echo in the first place? Every audio output has its own tiny processing delay before sound actually reaches your ears — a wired speaker is nearly instant, but Bluetooth has to encode, transmit, and decode the signal first, which typically adds anywhere from 100–300ms depending on the codec and device. Play the exact same audio stream through both at once with no correction, and your brain hears the same sound arrive twice a fraction of a second apart — that's the echo. Fixing it means giving the faster device a matching delay so both arrive together, which is exactly what a per-device delay control is for.

The popular tools (VoiceMeeter, Virtual Audio Cable)

Apps like VoiceMeeter and Virtual Audio Cable can route audio to several outputs. Both are genuinely good software — they're just built for a different job. Three practical differences worth knowing before you spend an evening on either:

1. They install a driver, so they need admin rights. Both add a virtual audio device to Windows and change your system's audio configuration globally, usually with a reboot. On a work or managed laptop that's often where the attempt ends. It also means uninstalling later isn't always clean.
2. You assemble the solution; they supply the parts. VoiceMeeter gives you a mixing desk with input and output buses to wire up. Virtual Audio Cable gives you virtual cables plus an Audio Repeater utility you run per output, with buffer sizes to tune — too small and it crackles under load, too large and it adds delay. Neither has a "play on these three devices" button; that configuration is the work, and most tutorials for them assume you're streaming.
3. Neither corrects drift — and this is the one that actually bites. VoiceMeeter has a delay slider you can nudge until two devices line up perfectly. Come back in forty minutes and they've separated again, because the slider is a fixed number while the real misalignment keeps growing as the two devices' clocks diverge. Buffer settings in VAC have the same limitation. You end up re-adjusting rather than fixing.

So they're a reasonable trade if you already need a routing mixer — streaming, microphone mixing, per-application audio. They're a lot of machinery if you just want your headphones and speakers playing the same song. There's a fuller breakdown of all four options, including where each one is genuinely the right choice, in SynchCast vs VoiceMeeter vs Virtual Audio Cable vs Windows 11 Shared Audio.

The easy way: SynchCast

If you just want it to work, SynchCast is a small Windows app made for exactly this. It plays your system audio through up to about five output devices at the same time, and keeps them in sync — no drivers, no virtual cables, no admin rights.

1. Download and open SynchCast.
2. On the Devices page, tick every output you want (speakers, USB, Bluetooth, HDMI).
3. Click Start Broadcasting. Your PC's audio now plays on all of them at once.
4. Bluetooth lagging behind? Nudge that device's delay slider until it lines up — no more echo.

Each device also gets its own volume slider, so you can keep one speaker quiet and another loud.

FAQ

Does it work with Bluetooth speakers and headphones? Yes. Bluetooth adds a little delay, so use the per-device delay slider to line it up. Note that your Bluetooth adapter's radio has a limit on how many wireless devices it can drive cleanly — SynchCast even tells you roughly how many yours can handle.

Will there be an echo? That's what the sync engine and delay slider are for — they keep the devices aligned so the sound lands together.

Do I need drivers or admin rights? No. It installs per-user and uses Windows' own audio system.

Is it free? There's a free 30-day trial. After that it's a one-time purchase — no subscription.

Can I mix wired and Bluetooth devices at the same time? Yes — for example laptop speakers plus a Bluetooth headset plus a wired monitor, all broadcasting together, each with its own volume and delay.

What are the system requirements? Windows 10 or Windows 11. SynchCast uses the WASAPI loopback API, which is a Windows-exclusive feature, so macOS and Linux aren't supported.

Bottom line

The built-in tricks work in a pinch but drift out of sync; the pro tools are overkill for anyone who doesn't already need a full routing mixer. If you want to play audio on multiple devices at once without the echo, try SynchCast free — install takes under a minute, and the 30-day trial has every feature unlocked.

Still deciding between the options? The side-by-side comparison of SynchCast, VoiceMeeter, Virtual Audio Cable and Windows 11 Shared Audio covers setup time, admin rights, device limits and price for each.