From the Datasheet Document in the OP/Original Post;
Kirkland Signature 8.0.pdf
KS 8.0 | Features and Accessories
Direct Audio Streaming / Made for iPhone / Apple iPhones 5 and later
Also, if you have plans to Self Program the KS8’s you only have one wireless option. That is, Noahlink Wireless. Or you can use a wired mini Pro/Hi Pro with CS44 cables and Programming pills/size 312.
ConnexxAir, ConnexxLink No
Noahlink Wireless Yes
Programming adapter / cable size 312