Podcast wirelessly. The Zoom BTA-2 is a compact Bluetooth adapter designed for use with the Zoom PodTrak P4. The BTA-2 is a transmitter and receiver so you can connect your phone to the PodTrack wirelessly and record interviews. When you plug in the adapter you can use a variety of ways to interview people. From phone calls to Zoom and Skype it provides a simple way to easily bring in guests remotely. The adapter features two connectors comprised of a 3.5mm TTRS connector and a 2.5 TRRS power supply connector.