kylef5993
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Mar 17, 2021

QC35 II sound muffled when connected via bluetooth

Hello all!

 

My QC35 II's sound very muffled when connected via bluetooth. The issue goes away as soon as they're connected via aux. I have reset and updated the headphones but to no success. Next steps?

 

Bose product name - QC35 II

 

Country - USA

 

Firmware Version - 4.8.1

 

App Version - 15.0

 

What devices were you using that were affected and what version are they on - iPhone 12 pro

 

 

5 REPLIES 5
Hector_B
Moderator

Re: QC35 II sound muffled when connected via bluetooth

Hello Kylef5993, 

 

Thank you for posting and welcome to the Community! Sorry to read that you are having muffled audio with your QC35's. 

 

Can you please let us know if this issue occurs when connected to other devices or just with the iPhone 12? If you haven't already tested with another device, please do. 

 

Let's also attempt to clear the pairing list for the headset, by following these steps here.

 

We look forward to hearing back from you with the result of these steps.  

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kylef5993
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Mar 17, 2021

Re: QC35 II sound muffled when connected via bluetooth

The issue happens when connected to a Mac, iPhone, and Windows PC via bluetooth. The issue does not occur when connected via aux.

Jessie_O
Moderator

Re: QC35 II sound muffled when connected via bluetooth

Hey Kylef5993,

 

Thank you for coming back to us!

 

I would recommend a firmware update. I have included the instructions on how to do this HERE.

 

Let me know how you get on!  

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kylef5993
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Mar 17, 2021

Re: QC35 II sound muffled when connected via bluetooth

Hi,

 

I have performed a firmware update but it was not fixed.

Tegan_M
Moderator

Re: QC35 II sound muffled when connected via bluetooth

I am very sorry to hear this. 

 

I would suggest in reaching out to your local Bose technical support team regarding service. You can reach out to your local support team by clicking this link and selecting your region. This will redirect you to our website. Please scroll to the bottom of the website and there you will find a 'Contact Us' tab, this will provide you with all the relevant contact information for your country.

 

Thank you.

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