Yes, the CXA has a Bluetooth AptX HD receiver built-in, so you can stream directly to the amplifier from a Bluetooth enabled device.
The Bluetooth source will need to be selected on the front panel of the CXA, and the supplied Bluetooth antenna will need to be connected to the rear of the amplifier to enable a Bluetooth connection.
Please note that the CXA does not contain a Bluetooth transmitter, so you will be unable to connect the amplifier to a pair of Bluetooth headphones or speakers.