It's midnight. You're wearing headphones. You press the volume-down key until you're at the lowest notch — one bar. It's still too loud. The next press is mute. There's nothing in between. You want volume at 3% but macOS jumps from ~6% to 0%.
This is a common complaint with headphones and sensitive speakers. macOS's 16 volume steps are too coarse — the lowest audible step is still louder than what you need for quiet late-night listening.
Built-in fix: quarter-step volume adjustment
Most Mac users don't know this: you can get 4x finer volume control using a keyboard modifier.
Hold Option + Shift and press the volume up/down keys. Each press adjusts volume by one quarter of a normal step — giving you 64 steps instead of 16.
This lets you find volume levels between the normal notches. That gap between "one bar" and "mute" now has three additional levels you can land on. For late-night headphone listening, this is often enough to find a comfortable level.
Why some content is louder than others at the same volume
You might notice that some apps feel louder than others even at the same system volume. Spotify at one bar feels louder than a YouTube video at one bar. This is because each app outputs audio at different levels, and system volume scales them proportionally.
A song mastered at 0 dB (maximum) and a podcast recorded at -15 dB will sound dramatically different at the same system volume. The song is 15 dB louder — which is perceived as roughly three times louder to your ears.
The real fix: per-app volume for fine control
The quarter-step shortcut helps, but it still adjusts all apps equally. If Spotify at the lowest step is too loud but your Zoom call at the lowest step is too quiet, you're stuck.
SoundDial gives you per-app volume sliders with fine-grained control — each slider moves in 1% increments from 0% to 200%. You can set Spotify to 5% and Zoom to 40% at the same time. The level of control is dramatically finer than macOS's 16 system steps.
For late-night headphone use:
- Set system volume to a moderate level (40-50%)
- Use SoundDial to fine-tune each app to exactly the level you want
- Spotify at 8% — barely-there background music
- Browser at 15% — quiet enough for late-night video
- Notifications muted — no surprise loud pings
Save this as a "Night" profile and apply it with one click when you put on headphones after hours.
Get SoundDial on the Mac App Store — €14.99 one-time purchase, no subscription, macOS 14.2+.