You know what is strange. But I have noticed one thing about Sony earphones as I am listening to my XBA-3s now.
I am using JVC tips on them. Much wider tips vs Sony hybrids. I use to swear by Sony hybrids but they actually restrict the sounds on their own earphones. Both the XB90 and now these XBA-3s sound even better with wider tips. You figure Sony engineers would figure this out. I suppose it would go against tradition or something to use wider tips but that is exactly what these earphones need. Weird.
By the way my impression of the XBA-3 was from using these JVC tips on them. Can't go back to using hybrids on their own earphones anymore.