If your Mac just isn't loud enough, three apps keep coming up: Boom 3D, eqMac and Vlume. They overlap, but each is built around a different priority. Here's an honest, like-for-like comparison across the four things that actually matter - loudness, distortion, drivers and price.
How loud does each one get?
This is usually the whole reason you're reading. Boom 3D includes a volume booster, but it doesn't publish a numeric figure, so it's hard to say exactly how far past the macOS maximum it pushes. eqMac offers a "boost beyond 100%" option that raises gain above the system ceiling. Vlume is the most explicit here: it boosts macOS system audio up to 800% (8×) past the OS maximum, which is genuinely dramatic on quiet films, calls and laptop speakers. If raw, measurable headroom is your goal, that published 8× figure is the clearest commitment of the three. For the why-behind-the-cap, see making your Mac louder than maximum volume.
What about distortion when you push it?
Loud is easy. Loud and clean is the hard part, and it's where these apps differ most. Cranking gain without any safeguard makes peaks clip, so audio turns crunchy and harsh exactly when you want it clearest. eqMac's boost is an equaliser gain with no documented limiter, so pushing it hard can distort. Boom 3D leans on its rich tone shaping rather than a stated loudness ceiling. Vlume runs an always-on limiter underneath the boost, catching peaks before they clip so the extra volume stays crisp rather than crunchy. That difference is most obvious on spoken-word content - there's more in making movie dialogue louder on a Mac.
Do you have to install a driver?
This one quietly decides the whole experience. eqMac routes audio through a kernel-level HAL audio driver, which means an admin password and a component that sits in your system. Boom 3D likewise installs its own audio component to process system sound. Vlume takes a different route: it's built on Apple's modern Core Audio process-tap API, so there's no kernel extension, no driver, no restart and no admin password. You install it, open it, and you're boosting. If driver friction is what put you off eqMac specifically, the eqMac alternative breakdown goes deeper.
Price: subscription or one-time?
Boom 3D is paid and often sold through subscription bundles. eqMac is free and open-source, with paid Pro tiers - a genuinely strong option if free matters most to you and a driver doesn't bother you. Vlume is a straightforward one-time £39 Pro (covering 1-2 Macs) or £59 Family (up to 5 Macs), with no subscription and free updates. There's a 3-day free trial with no card required, so you can confirm it actually solves your problem before paying.
Beyond loudness: EQ and multi-speaker
If you want the deepest tone control, Boom 3D's 31-band equaliser plus 3D/surround effects is the richest toolkit here. Vlume keeps things simpler with a built-in 6-band equaliser plus multi-speaker (multi-output) support and per-device volume - handy for playing audio through several speakers at once or equalising system audio. Vlume needs macOS 14.4 or later and runs as a universal binary on both Apple silicon and Intel.
Which should you pick?
- Want the deepest EQ and surround? Boom 3D.
- Want free and open-source and don't mind a driver? eqMac.
- Want maximum, clean loudness with no driver and no subscription? Vlume.
All three are good at what they're built for. If your real problem is simply "my Mac is too quiet," that's the exact lane Vlume is designed for - and you can try Vlume free for 3 days to hear the difference for yourself.