MarcX Studio

Auto Ducking

00Mac microphone volume utility

Mac mic ducking that lowers background audio while you speak.

Keep music, videos or ambient sound playing while you dictate, record or talk to an AI assistant. When your microphone turns on, Auto Ducking lowers your Mac’s volume to the level you choose. When it turns off, your volume comes back.

7-day full-feature trial. Lifetime Unlock is required to keep automatic ducking enabled after the trial.

On the Mac App Store. Works with any app that uses your microphone.

01Utilities / Productivity

Mic on, volume down. Mic off, it comes back.

Auto Ducking follows your microphone, so there is nothing to press.

  1. STEP 01

    You start talking to a dictation tool, an AI assistant or a recorder.

  2. STEP 02

    Your Mac’s volume fades down to the level you picked.

  3. STEP 03

    You stop, and after a short pause the volume fades back to where it was.

02Quick answer

What is mic ducking on Mac?

Mic ducking means lowering background audio while the microphone is in use, then bringing it back afterwards. Auto Ducking checks whether your Mac’s microphone is in use, fades the system volume to the level you chose and restores your previous volume when the microphone turns off. It never records or uploads what you say.

FIG.01

Calls stay at full volume

In a video or voice call, you hear everyone clearly. Auto Ducking lowers the volume when something else is playing, like music while you dictate.

Auto Ducking status panel during a video call, keeping the Mac volume at its normal level.
FIG.02

Set it once

Choose how low the volume goes, how long to wait before it comes back and how smooth the fade feels. Each sound output keeps its own settings.

Auto Ducking Ducking settings with the Lower To level, Restore Delay and the During Calls switch.
FIG.03

Pick the apps that lower the volume

Use every app with a microphone, only the apps you choose, or skip the ones you want to leave alone.

Auto Ducking Apps settings with All apps, Only these apps and Skip these apps.
FIG.04

At home in light and dark

The status panel and the dot-matrix duck in your menu bar follow your Mac’s appearance.

Auto Ducking status panel in light mode while dictation lowers the music to 10%.

03Controls

Tune it to the way you work

Settings fit on five simple pages, and shortcuts are there when you want a hand on the volume.

  • 01

    Save presets for dictation, recording, podcast prep or your own setup.

  • 02

    A different level for speakers, headphones, displays and other sound outputs.

  • 03

    Restore Now brings the volume straight back and keeps it up until your microphone turns off.

  • 04

    Manual Lower turns the volume down yourself, even with the microphone off.

  • 05

    Global shortcuts to pause, restore, lower or open the panel from any app.

  • 06

    Usage stats show how often Auto Ducking saved you a trip to the volume keys.

04Privacy

It checks your mic. It never listens.

Auto Ducking never records, transcribes or uploads audio. It only checks whether the microphone is in use and adjusts the system volume.

Seconds of audio recorded

  • Settings, presets and usage stats stay on your Mac, and you can reset the stats at any time.
  • Anonymous crash reports help fix problems faster. You can turn them off in Settings.
  • It runs in the App Sandbox and lives in your menu bar, out of your Dock.

05FAQ

Questions before you try it

What does Auto Ducking do with my microphone?

It only checks whether the microphone is in use, then adjusts your Mac’s system volume. Nothing you say is recorded, transcribed or uploaded.

What happens during a video or voice call?

The call stays at full volume, so you hear everyone clearly. Auto Ducking lowers the volume when something else is playing, like music while you dictate. If you want it to lower every time your microphone turns on, switch off “During Calls” in Settings.

Which apps can trigger it?

Any Mac app that uses your microphone. You can also limit it to the apps you choose, or skip the apps you want to leave alone.

Can I choose how quiet the music gets?

Yes. Set the level, the restore delay and the fade, and keep a different level for each sound output.

How much does it cost?

Every feature is free for 7 days. After that, a one-time Lifetime Unlock keeps automatic lowering on. There is no subscription.

06Guides

Auto Ducking guides

Practical guides for Mac mic ducking: dictation, AI voice chats, recording, streaming and the settings that make it feel right.

Lower Mac volume when the microphone is active

Use Auto Ducking to lower Mac background audio when a microphone app becomes active, then restore the previous volume when microphone use ends.

Mac auto ducking app for voice workflows

Auto Ducking is a Mac auto ducking app for lowering system audio when the microphone turns on and restoring volume afterward.

Use background music during Mac dictation

Keep background music playing during Mac dictation by lowering system volume while the microphone is active, then restoring it afterward.

Control background audio during AI voice chats on Mac

Control Mac background audio during AI voice chats by lowering system volume when your microphone is active and restoring it afterward.

Mac audio ducking for recording and streaming

Use Auto Ducking for simple Mac system-output ducking during recording, streaming, podcast prep, and microphone workflows.

A microphone utility that does not record your microphone

Auto Ducking is a microphone-aware Mac utility that lowers volume without recording, transcribing, or uploading microphone audio.

Mac menu bar audio utility for mic moments

Auto Ducking is a Mac menu bar audio utility for lowering background audio when your microphone becomes active.

Adjust the ducking level on Mac

Choose how quiet Mac background audio gets while the microphone is active, with restore delay, fade timing, presets, and hotkeys.

Simple mic-triggered ducking vs Mac volume mixers

Compare simple mic-triggered ducking with broader Mac volume mixers, audio recorders, and production tools.

Auto Ducking FAQ

Answers about Auto Ducking microphone detection, privacy, ducking level, restore delay, output devices, hotkeys, trial, and calls.

Let the music step aside while you talk

Set your level once and keep your audio playing. Auto Ducking handles the volume every time your microphone turns on.