Very little bass after update

[Rushfan]

Immediately after updating to latest firmware I get very little bass output. Adjusted eq to max bass. It does make a small difference. Nowhere near what it was seconds before update. Tried rebooting, checked settings. Nothing has helped. Any ideas?

 

[Wiimer]

Please try plugging the power cable back in and rebooting again.

Tap 'Join beta testing' at the bottom of the device info screen to install the beta or previous firmware version, if available, and see if the bass returns to normal.

You can also try running RoomFit to see if you can visualise the problem.

Submit a ticket via the feedback section of the WiiM app. A device log will be sent to help determine the cause.

 

[WiiM Support]

Immediately after updating to latest firmware I get very little bass output. Adjusted eq to max bass. It does make a small difference. Nowhere near what it was seconds before update. Tried rebooting, checked settings. Nothing has helped. Any ideas?

Hi Rushfan,

Please submit a ticket from the WiiM Home App. We'll troubleshoot this for you immediately. As Wiimer mentioned above, you can also go to the device setting > Device Info > Join beta testing and select the last firmware and see if it makes a difference.

Thank you for your continued patience and support!

 

[harkpabst]

Immediately after updating to latest firmware I get very little bass output. Adjusted eq to max bass. It does make a small difference. Nowhere near what it was seconds before update. Tried rebooting, checked settings. Nothing has helped. Any ideas?

Where submitting a ticket means: Head over to the "More..." tab in the WiiM Home app and tap on "Feedback".

You can describe your case shortly and attach any screenshots if you like. Most importantly, device logs will be transmitted automatically, so the WiiM staff can hopefully see what's been going on.

 

[Wiimer]

Where submitting a ticket means: Head over to the "More..." tab in the WiiM Home app and tap on "Feedback".

You can describe your case shortly and attach any screenshots if you like. Most importantly, device logs will be transmitted automatically, so the WiiM staff can hopefully see what's been going on.

As the team has implemented a rollback here, he only needs to explain the situation on the ticket

 

[harkpabst]

As the team has implemented a rollback here, he only needs to explain the situation on the ticket

Wasn't that just a single rollback for a single different user?

 

[Wiimer]

Wasn't that just a single rollback for a single different user?

I think they are both the same problem. The team is already aware of this issue and will roll it back as soon as he submit a ticket.
(Sorry, I am not objecting to your suggestion )

 

[slartibartfast]

Hi Rushfan,

Please submit a ticket from the WiiM Home App. We'll troubleshoot this for you immediately. As Wiimer mentioned above, you can also go to the device setting > Device Info > Join beta testing and select the last firmware and see if it makes a difference.

Thank you for your continued patience and support!

This sounds very similar to this issue

J

Post in thread 'WiiM Pro Plus Firmware v4.8.726047 Update - Aug 12, 2025'

Yesterday at 10:57 PM

Thank you very much for your quick response. The previous OTA version was restored, restarted the Wiim app, restarted the phone... unfortunately, I'm surprised to find that the problem persists. Now I don't know why. There's a constant feeling as if there's an equalizer on somewhere that boosts the treble and lowers the bass, even though EQ is off. I'll add again that I haven't used EQ or changed any settings in the WH app or phone for a long time. I have a simple rule: if something sounds great to my ears, I don't touch anything except updates... I don't know what to do now, I just...

• jac-st

 

[Jian]

In fact, after updating the latest firmware of WAU yesterday, I also encountered the same problem - the feel and power at lower frequencies were somewhat weakened. In fact, each firmware version has its own unique sound characteristics. You'll have to wait for the next update to see if there are any changes.

 

[slartibartfast]

In fact, after updating the latest firmware of WAU yesterday, I also encountered the same problem - the feel and power at lower frequencies were somewhat weakened. In fact, each firmware version has its own unique sound characteristics. You'll have to wait for the next update to see if there are any changes.

After updating my WiiM Amp the frequency response measured by REW is exactly as expected. Try measuring if you can then we can see exactly what is going on.

 

[harkpabst]

In fact, each firmware version has its own unique sound characteristics.

I never observed this behaviour with either of my WiiM devices.

 

[Ronnie D]

I had this issue too. When I first downloaded and installed this update, everything was fine until I got the popup to save my rc settings as roomfit settings. I experienced the same thin sound, lack of bass and too much treble. I just ran room fit again and it's back to normal. (Ish)
I would suggest that screenshots are taken as a reference for those who have put a lot of effort into their room correction settings.
Edit.
I had just come from the seperate RC and EQ beta so I didn't raise a ticket. I thought it was my own error.

 

[harkpabst]

I had this issue too. When I first downloaded and installed this update, everything was fine until I got the popup to save my rc settings as roomfit settings. I experienced the same thin sound, lack of bass and too much treble. I just ran room fit again and it's back to normal. (Ish)
I would suggest that screenshots are taken as a reference for those who have put a lot of effort into their room correction settings.
Edit.
I had just come from the seperate RC and EQ beta so I didn't raise a ticket. I thought it was my own error.

I noticed that I had to reboot (or maybe even power cycle?) my WiiM Amp Pro for the converted RoomFit profile to be actually applied. Right after the conversion process, no EQ (neither direct nor through a RoomFit profile) was active.

However, for me it came back on its own, without me doing anything but switching the device on and off.

This is not an explanation for those stating that they never used EQ or RC, though.

 

[Ronnie D]

I noticed that I had to reboot (or maybe even power cycle?)

I did try that, but it was the same. I just redid roomfit and now it's sorted

 

[Jian]

我确实尝试过，但都是一样的。我刚刚重做了房间装配，现在它已经整理好了

This is not a problem of room correction, but a problem of firmware version. The official has released the corrected version. We hope that WAU can also be corrected.

 

[Burnside]

这不是房间校正的问题，而是固件版本的问题。官方已经发布了更正版本。我们希望 WAU 也能得到纠正。

It could just as easily be a firmware update that removes the need for users to perform that roomfit workaround to resolve the issue..