The Windows 10 Volume Mixer, Explained
The Windows 10 Volume Mixer is the desktop utility, sndvol.exe, that has shipped with Windows since Vista. It shows a vertical slider for system sound plus one slider per running app that's producing audio, all in a single small window.
It's still fully functional in Windows 10 and remains the fastest way to see every app's volume level at a glance.
How to open the Volume Mixer
- Right-click the speaker icon in the taskbar notification area
- Choose "Open Volume mixer" from the context menu
- Alternatively, press Win+R, type sndvol.exe, and press Enter
What the mixer shows
The leftmost slider labeled "Device" or "Speakers" controls the master output level. Each app currently playing or capable of playing audio gets its own labeled slider to its right, with a small mute speaker icon underneath. There's also a "System Sounds" slider for Windows notification and event sounds, separate from any individual app.
Volume mixer vs. App volume and device preferences
Windows 10 added a newer panel, App volume and device preferences, in Settings > System > Sound. It does everything sndvol.exe does plus lets you assign a different output or input device per app — something the classic mixer can't do. See windows-10-app-volume-control for that panel, and windows-10-sound-mixer for a side-by-side comparison of both tools.
Common mixer problems
- An app doesn't appear until it actually starts playing sound
- A closed app's slider disappears from the mixer automatically
- Sliders reset to 100% after some driver updates
- The mixer window can be resized taller to show more app sliders at once without scrolling
Pinning the mixer for quick access
Because sndvol.exe has no built-in taskbar pin option, many people create a desktop shortcut pointing to C:\Windows\System32\sndvol.exe and pin that shortcut to the taskbar instead, giving one-click access without the right-click menu. This is a useful workaround if you open the mixer frequently throughout the day.
Alternatives if the mixer feels limited
If you want per-app volume and device switching combined into one tray popup instead of two separate tools, EarTrumpet does that job. Read eartrumpet-for-windows-10 for details, or check windows-10-volume-settings for a full map of where every volume control lives.
A few practical notes
For anyone who relied on the classic mixer for years, it's worth knowing that Microsoft has kept sndvol.exe functionally unchanged through Windows 10's many feature updates, even as newer panels were added alongside it. That stability is part of why some longtime users still prefer it over the full-page Settings alternative for everyday volume checks.
Frequently asked questions
How do I open sndvol.exe in Windows 10?
Press Win+R, type sndvol.exe, and press Enter, or right-click the tray speaker icon and choose Open Volume mixer.
Why is an app missing from the volume mixer?
Apps only appear once they've produced sound at least once during the current session.
Can the volume mixer change which device an app uses?
No, use Settings > System > Sound > App volume and device preferences instead for per-app device switching.
Can I pin the volume mixer to the taskbar?
Not directly, but you can create a shortcut to sndvol.exe on the desktop and pin that shortcut for quicker access.
What does the System Sounds slider control?
It adjusts the volume of Windows notification and event sounds separately from any running app.