What do the rear panel controls do?

Q: What do the rear panel controls do?

Unbalanced audio outputs Balanced audio outputs Digital inputs 1 and 2 USB Audio In For connecting to PC/MAC computers. Note: Class 2 USB Audio only. Windows-based PCs require a Cambridge Audio USB driver to be installed before connection. Ground/Lift Switch Ground – This is the default position if no issues are experienced with USB connection. USB host and DacMagic 200M use a common ground for highest link reliability. Lift – Lifting the USB host ground can be useful if electronic hum is heard through the speakers. The switch should otherwise be left in the Ground position. Bluetooth Antenna Used for wireless streaming Bluetooth audio directly from most phones, tablets and laptops. See Bluetooth section for details. DC 12V 2.0A power adaptor socket. Headphone connection

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Unbalanced audio outputs
Balanced audio outputs
Digital inputs 1 and 2
USB Audio In For connecting to PC/MAC computers. Note: Class 2 USB Audio only. Windows-based PCs require a Cambridge Audio USB driver to be installed before connection.
Ground/Lift Switch Ground – This is the default position if no issues are experienced with USB connection. USB host and DacMagic 200M use a common ground for highest link reliability. Lift – Lifting the USB host ground can be useful if electronic hum is heard through the speakers. The switch should otherwise be left in the Ground position.
Bluetooth Antenna Used for wireless streaming Bluetooth audio directly from most phones, tablets and laptops. See Bluetooth section for details.
DC 12V 2.0A power adaptor socket.
Headphone connection