Troubleshooting

Every known problem and its fix, straight from the app's engineers. Most issues come down to one macOS permission.

The #1 fix: the audio permission.

If MarshEQ seems to do nothing — or sound goes silent — check System Settings → Privacy & Security → Screen & System Audio Recording and make sure MarshEQ is enabled, then relaunch. The 60-second setup guide walks through it step by step.

Install & first launch

No sound or wrong sound

Bluetooth headphones

Hotkeys & media controls

License & purchase

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We answer every email, usually within a day. Include your macOS version and what you were playing audio through.

Troubleshooting

Install & first launch

“MarshEQ can't be opened because Apple cannot verify it”

“MarshEQ is damaged and can't be opened”

Installed it, but no window or Dock icon appears

“This app requires macOS 14.4 or later”

No sound or wrong sound

Audio goes silent when the EQ is enabled

The permission prompt never appeared

EQ is on but nothing sounds different

No sound at all after a crash or force-quit

Crackles, dropouts, or glitchy audio

Bluetooth headphones

Bluetooth sound is suddenly robotic / phone-call quality

My headphones got the wrong preset when they connected

Hotkeys & media controls

The play / next / previous buttons don't work

Global hotkeys don't respond

License & purchase

“License key limit reached” when activating

Paid, but no license key email arrived

Does the license stop working offline?

Trial ended — is my audio broken now?

Didn't find your problem?