Zoom BTA-2 Bluetooth Adapter for PodTrak P4 and P8 Phone Call-In

Zoom BTA-2: Wireless Phone Call-In for the PodTrak Recorders

The Zoom BTA-2 is a Bluetooth adapter that adds wireless phone call-in to the PodTrak P4, P4next, and P8 podcast recorders. Where the control-and-timecode BTA-1 serves field recorders and mixers, the BTA-2 does one focused job: it lets a smartphone bring a remote guest into a podcast. Plug it into the PodTrak and pair a phone, and a caller joins the show over Bluetooth. For a two-host podcast that wants a distant guest on the episode, it is the missing link.

Zoom BTA-2: Bring a Remote Guest Onto the Show

Paired to a phone, the BTA-2 routes a live call into a PodTrak channel so the guest is recorded alongside the hosts. Because the phone handles the call, any app the caller and host prefer will work, from a standard cellular call to a conferencing app. That flexibility means a guest can be anywhere with signal. The result is a clean, recorded interview without a studio phone line.

Zoom BTA-2: Mix-Minus Handled Automatically

The adapter carries full-duplex audio and applies mix-minus, sending the caller the full program mix except their own voice. That removes the echo and feedback that plague amateur call-in setups, so the guest hears the hosts cleanly and the recording stays professional. The PodTrak manages the routing, so there is no external mixer to patch. It is the detail that makes phone guests sound like part of the room.

Zoom BTA-2: Connection, Power, and Who It Is For

A 3.5mm TRRS plug carries the audio and a 2.5mm TRRS plug draws power from the PodTrak, so the BTA-2 needs no batteries and no separate cables. It is built for podcasters and interviewers running a P4, P4next, or P8 who regularly feature remote guests or take listener calls. Setup is a matter of plugging in and pairing a phone. For call-in podcasting on a PodTrak, it is the purpose-built solution.