Hello,
I am wodering if anybody got the Alsa Mixer (Equalizer) working with a Raspberry Pi and MAX98357 amplifier.
I tried to follow instructions I found for the HiFiBerry MiniAmp, but without success.
I can play and hear the testsound like with speaker-test -c 2 -d plugequal, but changing something in the mixer ( alsamixer -D equal) does not change what I hear.
What needs to be done to achieve an effect? Is there any instructions?