FaceTime calls on your iPhone are fine. But on your Mac, the other person sounds like they're whispering from three rooms away. Volume is maxed. You've checked everything you can think of. Still too quiet.
Low FaceTime volume on Mac is a common issue, and it has several possible causes. Let's walk through each one.
1. Check the output device
Go to System Settings → Sound → Output. Make sure the correct device is selected. If you recently connected or disconnected headphones, a display, or Bluetooth devices, macOS might have auto-switched to an unexpected output — like a monitor with barely-functional built-in speakers.
2. Check FaceTime's audio settings
During a FaceTime call, click the menu bar and check FaceTime → Video → select the correct output device under Audio Output. FaceTime can sometimes use a different output device than the system default, especially after device switching.
3. Disable AirPods auto-switching
If you have AirPods paired with multiple Apple devices, they might auto-switch away from your Mac mid-call. Check System Settings → Bluetooth → click "i" next to your AirPods → "Connect to This Mac" → set to "When Last Connected to This Mac" instead of "Automatically" to prevent mid-call switching.
4. Bluetooth codec issue
Using AirPods or Bluetooth headphones with FaceTime triggers the AAC-to-SCO codec switch (because FaceTime uses your microphone). SCO reduces audio quality and volume. Use a separate microphone (built-in Mac mic or USB) to keep AirPods in high-quality AAC mode.
5. Headphone safety limiting volume
System Settings → Sound → Headphone Safety. If "Reduce Loud Audio" is on, macOS is capping your headphone volume. Disable it or raise the threshold.
6. Reset Core Audio
Open Terminal and run:
sudo killall coreaudiod
This restarts the audio daemon and can fix stuck low-volume states. Rejoin the FaceTime call after audio restarts.
7. Boost FaceTime volume past 100%
If all settings are correct and FaceTime is still too quiet — perhaps the other person has a weak microphone — you need to amplify beyond macOS's limit.
SoundDial lets you boost FaceTime's volume up to 200%. Open the menu bar panel, find FaceTime, and drag its slider past 100%. The call audio is amplified in real-time without affecting any other app.
SoundDial also helps the reverse: if FaceTime's ringtone or notification sounds are too loud during focus time, lower FaceTime to 20% or mute it while keeping your music playing. One click to mute, one click to unmute.
Available on the Mac App Store — Apple-reviewed, sandboxed, one-time purchase, no subscription.