Do you have a question about the NAIM NAC-N 272 and is the answer not in the manual?
Verify mains voltage and connect power supply using the supplied cable.
Set the Signal Ground Switch to chassis unless hum is audible.
Connect to router via Ethernet or Wi-Fi antenna for internet radio.
Attach Bluetooth antenna to the rear panel socket for streaming.
Switch on the unit; it displays a welcome screen and selects Analogue 1 input.
Inputs selectable via front panel, handset navigation, or input keys.
Pair Bluetooth devices for audio streaming; automatic input switching.