Miniamp works on Pi4 but not Pi3


My Miniamp works flawlessly on a Pi4, but not on a Pi3 with the exact same setup:

  • Raspbian Buster Lite
  • Fresh install
  • Nothing on the Gpios except the Miniamp
  • Added dtoverlay=hifiberry-dac to config.txt and removed the standard audio there

--> speaker-test -c 2 works on Pi4. On Pi3, the test is seemingly running, but no sound is played.

aplay -l also lists the Miniamp correctly on both Pis.

What could be the reason for the Miniamp to not work on that Pi3?


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