As a wee side issue to this, I have only monaural hearing, being profoundly deaf in one ear since childhood, beyond the reach of any hearing aid (one has been tried unsuccessfully). Thankfully my other ear is not too bad, though probably declining as I get older. So stereo anything is pretty useless to me, and every bit of equipment seems to be geared up to those lucky enough to have binaural hearing.
I do use over the ear headphones when editing recordings on computer, which is helpful. However, I found that when writing music harmony and using the playback facility in my scoring software, it sends one part to one ear, and the other line to the other, so I end up having to take the headphones off to be able to hear both parts together! It would be nice to have some way of feeding all the sound into my one good ear.