Running Apple Music on Iphone. Streaming over Airplay 2 to Sonos One. Trying to work out whether the IOS EQ settings make any difference. They do, but not as I expected. I played the same track on several different EQ presets and there was no change to how the music sounded. It seems you need to restart a song for the change in EQ preset to take effect. And when I changed between several presets within one song, and then restarted the song, the EQ cycled quickly between those presets without my intervention. Bit odd.