Get started with Ambisonics and VR/AR audio with this free first-order Ambisonics panner/encoder that outputs YouTube compatible AmbiX (SN3D/ACN) format. Use it to encode mono or stereo tracks to first-order Ambisonics using a no-frills interface.
Note that Ambisonics requires a decoder to be listened to correctly. You will not have correct results if you listen directly to the output of this plugin.
You can read more details about the a1Panner here.