EQ?

[massi.rav]

Make sure you choose “Airplay or Bluetooth” and then choose the speakers from there
When playing via Airplay will show an oblong with a little arrow on the bottom

Then you can still access EQ - but it looks like you need to set it first as when I just tried it shows as active with the previous settings but won’t let me adjust while connected

If you just choose from “Select a device” list without first clicking on “Airplay or Bluetooth” then it uses Spotify connect I think (will show a circle logo with a speaker inside when playing) which doesn’t allow Access to playback settings

I do not use Bluetooth (and I have not tried with it) but I confirm the EQ in Spotify is disabled - or it cannot be used - even if you connect via Spotify Connect or Airplay before I choose the speakers.