Complicated question, so forgive the details.
First, they gave me a 4K box when I didn't ask for one; the regular bluesky box would have solved my problems, but apparently, they don't have it any more.
So, second, I have a wireless headphone. It goes through my amp, which is an older one, and doesn't have HDMI ports. Not that these could be used anyway, because the 4K box only has one HDMI out port, so you have to use it for your TV, meaning, nothing for your amp. The headphones have component inputs, but the 4K box doesn't take them. Why? Who knows. Seems like part and parcel with all the other stupid decisions that went into this box, like no clock, no front display, and so forth, but anyway it doesn't.
It does, however, have a coaxial output, and my amp has a coax in. So does anybody know if I run a coax cable from the box to the amp, and then choose the coax option for the amp output, will that make my headphones work again?