Picade 10 volume way too loud

Hello, my 10" newly built Picade works well, but the volume is stuck at 100%. What to do ?

having the same problem with the picadeX hat… No one seems to be able to help with what card/device to set in emulationstation, and the retropie “audio” applet says “onboard audio disabled, or not present”. despite this, the navigation sounds in emulationStation are present and VERY loud.

For anyone else finding this, for me the solution was to add

dtoverlay=i2s-mmap
dtoverlay=hifiberry-dac

lines to the config.txt, then you can set the volume in EmulationStation or thru alsa mixer.