WiiM Pro Plus Firmware v4.8.724036 Update - Jul 23, 2025

Please review the WiiM Pro Plus 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.

4.8.724036 (In Progress)​

Release date:

7 / 23 / 2025
What's New:

1. Advanced Parametric EQ: High-Pass & Low-Pass filters now available (App v3.2.6+ required).
2. Deezer: “Play Next / Play Last” options added.
3. Bluetooth: Adjustable latency for perfectly synced audio.

Bug Fixes:

1. Soundtrack Pairing: Fixed an issue preventing successful soundtrack pairing.
2. Gapless Playback: Fixed an issue causing incomplete audio playback.
3. General Fixes: General performance and stability improvements.

 

[Zap Rekowski]

If you don't responce and do LP/HP Filters properly, I'll sell all my WiiM devices and switch to miniDSP or Eversolo - I've had enough, waiting for your filters for 1 year and ??

Just between us: ...ludicrously bad, not very intelligent attempt at blackmail. They already have your money, so it doesn't matter. Especially for me.

 

[harkpabst]

I, for one, appreciate that they backflow the Updates recently released to the "cutting edge" Ultra to the "lesser" Pro and Plus models.

So do I. A unified build process resulting in identical firmware version numbers for the WiiM Pro and Pro Plus wouldn't be a bad thing regarding this policy. I just wonder if it's possible.

 

[Erebus]

identical firmware version numbers for the WiiM Pro and Pro Plus

Are they not the same version numbers currently?

 

[harkpabst]

Are they not the same version numbers currently?

They are, that's what I noted in my initial post.

This isn't the norm. At least it hasn't been so far, hence my question.

 

[armani006]

Typo?

No, just read theory please. LP and HP filters in Wiim are without Gain regulation, so you cann't adjust slope of the cut. Did you try it on WiiM ?

 

[armani006]

You got the wrong perception, the hi/lo are for peq. The one you like is for sub section. I’m not sure if it’s possible to incorporate like those from mini dsp via firmware update. It might be proprietary tech that you can’t use unless you pay royalties.

I don't know what you mean saing "hi/lo are for peq", I mean LP/HP filters with Gain and possibility to adjust the slope of the cut on wished frequency.

 

[harkpabst]

No, just read theory please. LP and HP filters in Wiim are without Gain regulation, so you cann't adjust slope of the cut. Did you try it on WiiM ?

You keep using wrong or misleading terminology so it's very hard to follow your thoughts.

By definition high pass and low pass filters do not have gain. Some platforms might combine filter settings with gain but that's a different matter. I'm not even sure if you really mean gain when you say it. Gain has nothing to do with the slope.

High-pass filters typically have a cutoff frequency of -6, -12, -18, or -24 decibels per octave ("dB/oct").

That's the slope of the filter, defined by its order, not its cut-off frequency. A frequency is given in Hz, not dB/oct.

A low-pass filter is often also called a high-pass filter, since it cuts off high frequencies.

No, a low pass filter is never called a high pass filter and a high pass filter is never called a low pass filter. Both are doing the exact opposite thing. If you meant to say that a low pass filter can be called a high cut filter that wouldn't have been wrong, just less common.

High and low pass filters are exactly defined by their cut-off frequency, their order and their Q factor. That's it.

I don't know what you mean saing "hi/lo are for peq", I mean LP/HP filters with Gain and possibility to adjust the slope of the cut on wished frequency.

High and low pass filters are currently available in manual PEQ only. You cannot use a single.WiiM Pro or Pro Plus to implement a crossover e.g. between main speakers and a subwoofer. You could use two if them grouped together for that task.

Currently, the order of the filter is not customisable, indeed. Also the visual representation of filter Q is wrong.

 

[Djinn206]

Maybe "bass" and "pass" has gotten mixed up. Because a high "pass" filter can be seen as a low "bass" filter (filtering low bass frequencies out).

 

[armani006]

By definition high pass and low pass filters do not have gain. Some platforms might combine filter settings with gain but that's a different matter. I'm not even sure if you really mean gain when you say it. Gain has nothing to do with the slope.

That's the slope of the filter, defined by its order, not its cut-off frequency. A frequency is given in Hz, not dB/oct.

Thank you for good explanation, because englisch is not my native language - here was some kind of misunderstood. Under Gain I mean +/- increase or decrease of the slope on the choosed frequency, but you say the slope has not Gain, it has Order, ok, let's say Order, but this is also not an option in WiiM software, I cannot choose the how rapid or smooth can be slope on wiched frequency.

High and low pass filters are currently available in manual PEQ only.

this is what I tried to set.

You cannot use a single.WiiM Pro or Pro Plus to implement a crossover e.g. between main speakers and a subwoofer. You could use two if them grouped together for that task.

I have both of them
Example: I whan to set bi-amping (but in my case this means Amps with DACs and also with Streamers), So two Wiim streames conected to two DACs, further to two Amps - one line for mids and highs, another line is for bass speakers. I have good R2R DAC and tube amlifier and cheap DAC and D-class Amp for bass.
Idea is to set X-over of two lines in WiiM streamers. Both of them can 24/192, miniDSP Flex can only 96kHz.
Both WiiMs are in group, I want to set X-over on 120Hz for example, slope must be as sharp as possible, to have more freedom, hier it can be also good to have possibility to set linkwitz-riley and other filters, cus random adjustet slope can lead to bad sounding result.

 

[Smartplug]

Thank you for good explanation, because englisch is not my native language - here was some kind of misunderstood. Under Gain I mean +/- increase or decrease of the slope on the choosed frequency, but you say the slope has not Gain, it has Order, ok, let's say Order, but this is also not an option in WiiM software, I cannot choose the how rapid or smooth can be slope on wiched frequency.

What you’re looking is similar to mini dsp
this is what I tried to set.


I have both of them
Example: I whan to set bi-amping (but in my case this means Amps with DACs and also with Streamers), So two Wiim streames conected to two DACs, further to two Amps - one line for mids and highs, another line is for bass speakers. I have good R2R DAC and tube amlifier and cheap DAC and D-class Amp for bass.
Idea is to set X-over of two lines in WiiM streamers. Both of them can 24/192, miniDSP Flex can only 96kHz.
Both WiiMs are in group, I want to set X-over on 120Hz for example, slope must be as sharp as possible, to have more freedom, hier it can be also good to have possibility to set linkwitz-riley and other filters, cus random adjustet slope can lead to bad sounding result.

What you’re looking is similar to mini dsp where you can adjust slope on crossover between the main and sub. Wiim don’t have that feature what they have is hi/lo in peq if both use it create band pass.

 

[harkpabst]

I have both of them
Example: I whan to set bi-amping (but in my case this means Amps with DACs and also with Streamers), So two Wiim streames conected to two DACs, further to two Amps - one line for mids and highs, another line is for bass speakers. I have good R2R DAC and tube amlifier and cheap DAC and D-class Amp for bass.
Idea is to set X-over of two lines in WiiM streamers. Both of them can 24/192, miniDSP Flex can only 96kHz.
Both WiiMs are in group, I want to set X-over on 120Hz for example, slope must be as sharp as possible, to have more freedom, hier it can be also good to have possibility to set linkwitz-riley and other filters, cus random adjustet slope can lead to bad sounding result.

OK, now that we've got terminology straight (English isn't my first language either) let's continue:

With a WiiM Pro and a Pro Plus you can do that but it's probably not the perfect setup. Currently the low and high pass filters are always 4th order and you can only adjust the Q factor and crossover frequency. But that's not all. How do you want to feed the signal into the WiiMs?

You could either split a signal coming from an external source into both WiiMs. In this case you couldn't use the built-in streamer and would just be using them as crossovers with limited flexibility.
Or you could group the two WiiM devices, so one can effectively share each of its inputs with the other. But in this case you are generally limited to 16 bit 44.1 kHz again.

There are occasional reports of 24 bit or 48 kHz with grouped WiiM devices but 16 bit 44.1.kHz is what I get with my WiiM Amp Umtra and WiiM Amp Pro using the integrated Tidal client.