WiiM Pro Firmware v4.8.726839 Update - Aug 20, 2025

Please review the WiiM Pro update release notes below. If you encounter any issues, feel free to reach out to us. This firmware update is being rolled out in stages, with devices updating sequentially over the next few days.

4.8.726839 (Latest)​

Release date:

8 / 20 / 2025

Bug Fix:

1. No Bass Audio: Fixed an issue that caused bass audio not to output.

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[slartibartfast]

And stacked the profiles, so that you can now have both RoomFit and PEQ/EQ active at the same time.

Well yes but if you just use the same room correction profile with no EQ there shouldn't be any difference.

 

[hgo58]

Well yes but if you just use the same room correction profile with no EQ there shouldn't be any difference.

I don't think so. I just started to use RoomFit after the split, as I mostly use the EQ. Adding the RoomFit as a base for the EQ has actually enhanced the sound much more than I was expecting.

 

[Horsey]

I don't think so. I just started to use RoomFit after the split, as I mostly use the EQ. Adding the RoomFit as a base for the EQ has actually enhanced the sound much more than I was expecting.

Yes, exactly. It's more than a little surprising. It's like my full range system got an injection of steroids. Everything is enhanced across the board. The vibrancy and separation is on another new level.

Extremely impressed here.

 

[slartibartfast]

I don't think so. I just started to use RoomFit after the split, as I mostly use the EQ. Adding the RoomFit as a base for the EQ has actually enhanced the sound much more than I was expecting.

The Roomfit part of it is still the same as it was before the split. One way to compare would be to copy the Roomfit profile into PEQ and disable Roomfit. It should sound exactly the same.

 

[Guywithadriim]

The RoomFit change is really really really really confusing and annoying.

I’m glad for those who for whatever reason wanted EQs on top of their EQs so they can EQ while they EQ. But for someone who liked having all of their EQs in one menu like myself, this sucks ass. I know I can manually copy over RF/RC profiles but that’s a real shitty solution, huh.

 

[hgo58]

The RoomFit change is really really really really confusing and annoying.

I’m glad for those who for whatever reason wanted EQs on top of their EQs so they can EQ while they EQ. But for someone who liked having all of their EQs in one menu like myself, this sucks ass. I know I can manually copy over RF/RC profiles but that’s a real shitty solution, huh.

I don't see the RoomFit as an EQ. It's a way to make your system sounding neutral and remove room issues, and then you can apply EQ/PEQ on top of that too match the music style or your mood.

 

[Guywithadriim]

I don't see the RoomFit as an EQ. It's a way to make your system sounding neutral and remove room issues, and then you can apply EQ/PEQ on top of that too match the music style or your mood.

It literally creates a PEQ.

 

[hgo58]

It literally creates a PEQ.

Yes but for another purpose.

 

[Guywithadriim]

I guess a sorta alternate use of this new update is you can now basically have a 20-band PEQ

 

[anonyless]

The RoomFit change is really really really really confusing and annoying.

I’m glad for those who for whatever reason wanted EQs on top of their EQs so they can EQ while they EQ. But for someone who liked having all of their EQs in one menu like myself, this sucks ass. I know I can manually copy over RF/RC profiles but that’s a real shitty solution, huh.

make sure WiiM knows your take on their recent "upgrade" , and open a ticket on this

https://faq.wiimhome.com/en/support/tickets

 

[Guywithadriim]

make sure WiiM knows your take on their recent "upgrade" , and open a ticket on this

https://faq.wiimhome.com/en/support/tickets

First thing I did when I got the update and started playing around with it!

 

[hgo58]

First thing I did when I got the update and started playing around with it!

Are you sure you understand the purpose of RoomFit?

 

[Guywithadriim]

Are you sure you understand the purpose of RoomFit?

I guess I just don’t.

I thought it made a PEQ based on room acoustics to tune and neutralize your speakers based on one of several listening target curves

 

[hgo58]

I guess I just don’t.

I thought it made a PEQ based on room acoustics to tune and neutralize your speakers based on one of several listening target curves

Yes. The sound profile created by RoomFit is to make a "flat" sound that is well controlled. It doesn't have to sound "good" but sometimes it do. It's used as the base for additional EQ to fit your taste.

I have found a good RoomFit profile and I don't change that any more (except currently I will have to disable it when using headphones). Then I apply normal EQ on top of that. I do for example add some additional bas when playing at low volume but removes it when playing loud.

The RoomFit profile don't change, as it gives me the controlled baseline for the other EQs.

 

[slartibartfast]

Yes. The sound profile created by RoomFit is to make a "flat" sound that is well controlled. It doesn't have to sound "good" but sometimes it do. It's used as the base for additional EQ to fit your taste.

I have found a good RoomFit profile and I don't change that any more (except currently I will have to disable it when using headphones). Then I apply normal EQ on top of that. I do for example add some additional bas when playing at low volume but removes it when playing loud.

The RoomFit profile don't change, as it gives me the controlled baseline for the other EQs.

But you can also choose from three target curves in Roomfit and stereo or individual channel which effectively gives you another three target curves . Having the option to use EQ on top of Roomfit is a good idea but I wouldn't be surprised if I never use it. I would rather have another 10 filters available for Roomfit.

 

[hgo58]

But you can also choose from three target curves in Roomfit and stereo or individual channel which effectively gives you another three target curves . Having the option to use EQ on top of Roomfit is a good idea but I wouldn't be surprised if I never use it. I would rather have another 10 filters available for Roomfit.

Ok. That is not how I use it.

I played around with all these target curves and measurement methods until I found the one that fits my system best. Then I stay with that until I change my room or speaker placement.

Everything else is done by the normal PEQ/EQ, depending on source and my mood.