Puzzled. How to connect Krell SBP 32X DAC to laptop or phone

Hi folks, 


I picked up a Krell SBP 32X DAC in hopes of connecting my lap top or phone directly to the unit. It only has fibre optic or coax. Any pointers? 


Thank you,




Oh boy. Okay. I was hoping to now spend that kind of money. I'll see what I can find. 


Thank you!