Originally Posted by CMB Integrations - Bruce
Usable without additional core device refers to the Bluetooth and Airplay capabilities where the connected device is playing via Tidal, Pandora, etc.
That muddies the water further, as the statement refers to the connected USB HDD.

Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia
#3: Other stuff