How do I switch between the two Hub / Connect Input 1 inputs?

Two inputs are available for selection at Input 1

Analogue via 3.5 mm mini-jack, Aux In
Analogue via stereo RCA, Line In

The inputs are selected on the speaker using the Focus XD remote control.

The two inputs at Input 1 can be individually selected by repeatedly pressing remote control button Input 1, if both inputs are connected to a source.