Onkyo HT-R993 Mode D'emploi page 7

Network connection
You can enjoy Internet radio and DLNA by connecting
the unit to LAN. The unit can be connected to the router
with an Ethernet cable or to the wireless LAN router with
Wi-Fi connection. In case of wired connection, connect the
Ethernet cable to the Ethernet port. LAN For Wi-Fi setup,
see "4th Step : Network Connection" of "Step 2: Setting
Up".
Internet radio
Router
Headphones connection
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or ø 6.3 mm) to the PHONES jack on the front panel.
Sound from the speakers will be off while you are using the
headphones.
r If you selected any other listening mode than Pure Audio
(European models), Stereo, Mono and Direct, connecting
headphones will switch the listening mode to Stereo.
PC
NAS
Step 1: Connections
7