SXFI AIR can be setup with either a USB Type A to Type C cable or a 3.5mm 4-pole audio cable.
At the Playstation 4 settings, enable "Switch Output Device Automatically" so that audio will be automatically switched to the SXFI AIR once it is plugged into the Plystation 4.
Connect SXFI AIR using a 3.5mm 4-pole cable and connecting it into the controller.
For both game audio and voice chat, 3.5mm 4-pole Line-In and Bluetooth from a mobile device must be used. Please note that the Nintendo Switch Online app must be installed on the mobile device to allow voice chat. This app is only available on selected Playstores.
For only game audio, 4 pole Line-In and/or USB can be used.