ESI Audio Julia - fat sound in the bass

I have a ESI Audio Julia and yesterday I reinstalled Manjaro XFCE on my Audio PC.
Celeron N 3150 CPU, 8 GB Ram, 250 GB SSD Samsung.

Now the sound in the bass is fat.

I adjusted the settings of pulse audio:
sampling resolution 32 Bit, 48kHz sampling frequency, 2 speakers front left - right.

Do I need to install some firmware?

I have found the problem in the setup of my Audio PC:
I have loaded the optimized defaults in the UEFI Bios.

This solved the sometimes not starting GUI, too.

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