People on calls say the Bose QuietComfort Headphones sound muffled, too quiet or cut out, and the microphone's performance depends on the connection profile, the app and the surroundings as much as on the headphones. When a headset is used for a call, Bluetooth switches from the high-quality music profile to the narrower hands-free profile, and the sound for both sides becomes thinner, which is normal and not a fault. Start by confirming that the headphones are selected as the microphone in the app or in the device's sound input settings,
The checks in more detail
since many computers keep using the laptop microphone even when the headphones are the speakers. On a computer, open the sound input and speak while watching the level meter; if the meter does not move, choose the headphones' hands-free input. Placement matters. The microphones on these headphones sit on the earcups and use noise rejection to hear you, so a hand over the earcup, a hood or a scarf muffles it, and wind outdoors makes it worse. Make sure the headphones are worn correctly, and try moving to a quieter place.
In the Bose Music app, look at the settings for the microphone or self-voice; self-voice lets you hear yourself, and a level that is too low makes you speak softly, while too high makes you shout. If callers hear echo, turn the volume down a little or use the phone's own speaker and mic as a test to find out whether the headphones are to blame. For video calls on a computer, a wireless connection with the hands-free profile limits quality,
and a wired connection with the cable gives the best music but no microphone on some devices, so check which input is active. Use a USB Bluetooth adapter with good hands-free support if the computer's built-in one is poor, update the headphones' firmware and the call app, and make sure the app has permission to use the microphone. If callers always hear crackle or silence on every device and app, the microphone may be faulty and Bose support can repair or replace the headphones under warranty with the serial number.
Differential
Likely causes of “Bose QuietComfort Headphones microphone sounds bad or is not detected”, and how to tell them apart
- 1
The wrong input device selected
What separates it Callers hear the laptop microphone or nothing
How to confirm Choose the headphones as the input
- 2
The hands-free profile
What separates it Thin sound on both sides
How to confirm Normal; use the cable or a better adapter for music
- 3
A covered earcup
What separates it Muffled voice
How to confirm Keep the earcups clear
- 4
Wind or noise
What separates it Crackle outdoors
How to confirm Move to a calmer place
- 5
An app without permission
What separates it Silence in one app
How to confirm Allow the microphone in the app's settings
Before you touch a setting
Record this first — changing settings destroys the evidence
- The app and device
- Whether the level meter moves
- Where you are using them
- The firmware version
Try in this order
0 of 6 completedSelect the headphones as input
ReversibleIn sound settings.
Check the level meter
ReversibleWhile you speak.
Keep earcups clear
ReversibleOf hands and scarves.
Allow the microphone
ReversibleIn the app.
Update the firmware
ReversibleAnd the call app.
Try another device
ReversibleTo isolate the fault.
Model-specific
What is true of this model and not of its siblings
- Hands-free profile
- It is narrower than the music profile.
- Input choice
- Set it in sound settings.
Stop boundary
When this stops being a self-service repair
- !If callers hear crackle or silence on every device and app, contact Bose with the serial number
- !Update the firmware first
- !Test another call app
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Why do I sound muffled on calls?+
Bluetooth switches to a narrower profile.
Why does the laptop use its own microphone?+
The input was not set to the headphones.
Does wind matter?+
Yes, outdoors it hurts quality.
Is the microphone faulty?+
Only if every device and app has the problem.