Turn off Spatial Audio from a Mac
- Open Control Center
- Control Center is the stacked "switch off" over "switch on" icon usually immediately to the left of the Calendar / Clock
- On a Mac, Fn+C will open it
- With your headphones connected, selected as the audio output, and audio playing:
- Click the icon that is a triangle with "waves" coming out of it
- Change "Spatialize Stereo" to "Off"
My thanks to xiaopingwow in Apple Discussions. Their post includes images.