I have Roon running on my nucleus. On my iPhone 15, Mac laptop and on my Astell & Kern player, Roon is available and also ARC is on the A&K although it will only work within the house as we have Starlink and cannot access the network from outside it because of that. I cannot locate any of the headphone EQ presets in Muse although I have done so previously. Now they do not show up on any of the devices.
@Marcus_Adams1 I noticed when I checked on this on my Roon system that sometimes the Muse settings features would appear and sometimes only the Precision audtio control image appears. If you click on the Precision audio image graphic does Muse appear on the left panel?
Based on your screenshot, you have opened the MUSE settings and clicked on the side menu with Library control. To enable the Headphones settings, you can click on “Headphones EQ” under the filters section.