on their site I assume it should work pretty well with Airpods
AppleTwelve South AirFly Pro lets you use your AirPods or Beats wireless headphones with non-Bluetooth devices that have a headphone jack. Buy online now at apple.com.
https://www.apple.com/shop/product/HNNT2ZM/A/twelve-south-airfly-pro-bluetooth-transmitter[https://www.apple.com/shop/product/HNNT2ZM/A/twelve-south-airfly-pro-bluetooth-transmitter?fnode=b2598a396f5996a4c8e15053ad581199cb24391899693db92814cd5504502c6e717a53a0aa81b3ed593850f958f3376f9dd4040bc7b5a5ee3995c964d22f537e1b1a098c2f976c067187f664eddc56b0d280fb8a40c3f6261f42d145dd1f787c]