You've maxed the volume slider, turned the video up too, and that YouTube clip is still too quiet to follow. On a Mac, the fix usually isn't in the browser at all - it's in how macOS caps your output. Here's how to make web video properly loud, in any browser.
Why YouTube sounds so quiet on a Mac
Two things stack up against you. First, macOS has a hard ceiling on system volume, and MacBook speakers are physically small - so "100%" is often quieter than you'd like, especially for spoken-word content like interviews, lectures and podcasts uploaded as video. Second, audio on YouTube is wildly inconsistent. Creators master at different loudness levels, and YouTube normalises loud uploads down but doesn't bring quiet ones up. A clip recorded on a phone in a big room can land far below a studio-produced one, and no amount of dragging the slider fixes a source that's simply low.
The result: you're stuck between two limits - the video's own quiet mix and the operating system's cap - and the on-screen controls can't push past either.
Quick things to check first
Before reaching for anything extra, rule out the easy stuff:
- Both volume controls. The YouTube player has its own slider, separate from macOS. Set both to full.
- Output device. Click the volume control in your menu bar and confirm audio is routed to the speakers or headphones you're actually using - not a stray Bluetooth device or a virtual output left over from a call.
- Per-app levels. If you've ever used an audio-mixer app, your browser may be turned down independently. Check it isn't.
- Sound enhancements. Some headphones and accessibility settings apply their own volume reduction. Worth a quick look in System Settings.
If everything is maxed and it's still too quiet, you've hit the OS ceiling - and that's exactly the wall most people run into. Our guide on why MacBook speakers are so quiet goes deeper on that limit.
Make any browser louder - past the macOS limit
This is where a system-wide volume booster earns its place. Because the quietness comes from macOS itself, the cleanest fix sits below the browser, at the system audio level - so it works the same whether you watch in Safari, Chrome, Firefox, Arc or Brave, and it covers everything else too: web players, embedded video, Twitch, anything that makes sound.
Vlume boosts your Mac's overall output up to 800% (8×) beyond the macOS maximum, so a quiet YouTube video finally reaches a comfortable level. Just as important, an always-on limiter rides the peaks so that big extra gain stays clean - no harsh clipping or crackle when a quiet interview suddenly cuts to loud intro music. There's also a 6-band equaliser, handy for lifting the mid frequencies where voices sit, making mumbly talking-head videos easier to follow.
Crucially, it's built on Apple's modern Core Audio process-tap API, so there's no kernel driver to install, no restart and no admin password - you download it and it works. It runs on macOS 14.4 or later as a universal binary (Apple silicon and Intel).
What about free or other options?
If you'd rather not pay, eqMac is a free, open-source tool with a "boost beyond 100%" option. The trade-offs: it installs a kernel-level audio driver (which needs your admin password) and has no limiter, so pushing the gain hard can distort. Boom 3D is a polished paid app with a strong 31-band EQ and 3D/surround effects, though it's typically sold through subscription bundles and doesn't publish a numeric boost figure. If you want the full side-by-side, our Boom 3D vs eqMac vs Vlume comparison lays out loudness, drivers and price.
Vlume's pitch is simple: a real limiter so big boosts stay clean, no driver, and a one-time price (£39 Pro for 1-2 Macs, £59 Family for up to 5) with no subscription.
The bottom line
Quiet YouTube on a Mac is almost always the operating-system ceiling, not the browser - which is why a system-level boost fixes it everywhere at once. Set both volume controls to full, confirm your output device, and if it's still too low, add headroom above the macOS cap with a limiter keeping things clean. The same approach works for Spotify and Netflix too.
You can try Vlume free for 3 days - no card needed - and see how much louder your next video gets.