Bluetooth Headphones Too Quiet on Mac? Every Fix

Your Bluetooth headphones are plenty loud on your phone. You connect them to your Mac and everything is quieter. Music sounds muffled. Calls are hard to hear. Volume is maxed and it's still not enough.

Several things on a Mac can make Bluetooth audio quieter or muddier. Here's each one and how to fix it.

1. Headphone Safety is capping your volume

macOS can limit headphone volume to protect your hearing.

Go to System Settings > Sound > Headphone Safety. If "Reduce Loud Audio" is on, turn it off or raise the threshold. This is a very common reason headphones are quieter on a Mac than on a phone.

2. A different codec than on your phone

Bluetooth headphones can connect with different codecs. macOS uses AAC or SBC; it doesn't use aptX or LDAC. If your phone uses one of those with your headphones, the same headphones can sound different, and sometimes quieter, on your Mac.

Fix: there's little you can change about codec choice on macOS, but it explains the difference.

3. The microphone switched them to headset mode

This is the usual cause of muffled sound. When an app uses your Bluetooth headphones' microphone (Zoom, FaceTime, Siri, dictation), the headphones switch to a hands-free (headset) mode built for calls. Audio sounds thin, muffled and quieter.

Fix: use a separate microphone, such as the Mac's built-in mic or a USB mic, and keep your headphones as output only. In your call app's audio settings, set the input to your Mac's mic and the output to your headphones. If the sound stays muffled after a call, disconnect and reconnect the headphones.

4. Bluetooth volume is out of sync

Bluetooth audio has a volume level on the Mac side and one on the headphone side. They can drift apart: the Mac shows 100% but the headphones aren't at full volume.

Fix: disconnect the headphones (System Settings > Bluetooth, click the "i", Disconnect), wait a few seconds and reconnect. If your headphones have their own volume buttons, make sure those are at maximum too.

5. A weak Bluetooth connection

Distance, obstacles and interference from Wi-Fi routers or USB 3 devices can weaken the Bluetooth signal, which can hurt sound quality.

Fix: move closer to your Mac, disconnect Bluetooth devices you're not using, and move USB 3 hubs and drives away from your Mac.

6. The headphones themselves

Some headphones simply get less loud than others, and some have volume limits in their own firmware or settings. If your headphones have a companion app from the manufacturer, check it for a volume limit or "safe listening" option.

Still quiet? Boost one app beyond 100%

If you've checked everything above and your headphones are still too quiet on your Mac, the audio itself may be quiet, and you need to go above the macOS maximum.

SoundDial lets you boost one app above 100%, up to 200%. If your music app is too quiet, drag its slider to 160% in the menu bar.

Boosting per app means you only raise the quiet one. If a podcast is quiet but music is fine, boost the podcast app to 170% and leave your music app at 80%.

SoundDial is a per-app volume mixer for Mac, €14.99 one-time purchase on the Mac App Store with no subscription, and needs macOS 14.2 or later.

Get SoundDial on the Mac App Store.