So here are what you will need to monitor the audio of your Tentacle Track E
https://shop.tentaclesync.com/product...
1) bluetooth wireless transmitter (not just receiver) (with built in battery)
https://www.amazon.fr/gp/product/B086...
2) A 3.5 to 3.5 jack cable
3) Wireless headphones
And that's it !!
Feel free to ask me any questions and don't forget to subscribe !