if it were me I'd get a bluetooth receiver and get a 3.5mm to Y adapter to plug into that Alpine KCA. They have cheap bluetooth receivers these days. I work for a company that manufactures one if your interested look up GoAdvanz M-510 on amazon. we are currently working on an updated version with a Toslink connection
Bluetooth Options
Need some help/input from some of the Old guys on here 
Here's the system, Alpine 7998/PXA-H700/DHA-S680.Wanting to add at least an Auxiliary hookup for playing files through the system with my phone via 3.5mm jack or Bluetooth even.
What add on devices from this era are needed. KCA-410C V-Link?
Here's the system, Alpine 7998/PXA-H700/DHA-S680.Wanting to add at least an Auxiliary hookup for playing files through the system with my phone via 3.5mm jack or Bluetooth even.
What add on devices from this era are needed. KCA-410C V-Link?
