How to connect z5500 speakers with sony headphones?

[arekgreenman888]

I've got above speakers and MDR-DS6000 headphones. Trided 2 optical cables but still no"No Digital data" is displayed on logitech table top unit. What to do? Which coax cable to use instead of digital please?

 

[Five.Stars]

I don't think either the coax or optical on the rear of the control unit are outputs buddy. The only output is a 3.5mm jack on the side.