Does using EQ degrade sound quality in Wiim Pro?

[canard]

I have seen no evidence of this advanced algorithm to avoid clipping and it has never been mentioned in the forum before. I wonder who wrote it.

It's especially easy to check in a few clicks ;-)

 

[slartibartfast]

It's especially easy to check in a few clicks ;-)

Yet nobody has and it still is a common request. WiiM have never replied to those requests to say that automatic gain reduction is already in use.

 

[Burnside]

Yeah, the faq also says you can use Alexa to run a preset, but that’s not accurate so unless WiiM confirm it here, I’d take that entry as open to question as well.

 

[jed1]

A happy Wiim Pro owner here. Having the Wiim volume set to fixed I have been somewhat reluctant to use the EQ though.

In this and other threads on this forum regarding EQ, the consensus seems to be that that clipping can/will occur in a situation like mine: having fixed volume (or at 100 %) and using positive gain in the EQ.

Wiim though, states the following:
View attachment 18386
https://faq.wiimhome.com/en/support...ow-to-use-parametric-eq-a-comprehensive-guide

Is it unnecessary to decrease the volume or having digital headroom when applying positive EQ gain, since with the mentioned “advanced algorithm” there will be no clipping or increase of distortion, or am I missing something?

Good finding! I calculate an impulse response in time domain and measure peak amplitude to estimate the headroom. I use MATLAB/Octave.

 

[Wimsey]

Yet nobody has and it still is a common request. WiiM have never replied to those requests to say that automatic gain reduction is already in use.

Yeah, the faq also says you can use Alexa to run a preset, but that’s not accurate so unless WiiM confirm it here, I’d take that entry as open to question as well.

Hmmm ... I have read and heard so many good things about WiiM, their customer support and their efforts in improving their firmwares and the app. I have had the highest regard for WiiM and their product support.

Now I must quote that tall dark guy in Star Wars: “I find your lack of faith disturbing”.

 

[slartibartfast]

Hmmm ... I have read and heard so many good things about WiiM, their customer support and their efforts in improving their firmwares and the app. I have had the highest regard for WiiM and their product support.

Now I must quote that tall dark guy in Star Wars: “I find your lack of faith disturbing”.

You haven't been here long have you?

 

[Burnside]

You haven't been here long have you?

Both of me neither

 

[slartibartfast]

It's especially easy to check in a few clicks ;-)

What's the best way to test this? I was thinking of a +12dB filter at around 18kHz and listening for a reduced volume.
That wouldn't work for the Amp if the algorithm only limits the maximum volume if clipping is detected. It would work for the Ultra if the volume was set to 100%.