I'll probably use one of these (or a similar) plugin transmitter on my Manticore to be able to use the headphones I prefer. You just can't wear regular headphones in the Texas summer heat. Not an affiliate link.
https://www.amazon.com/Bluetooth-Transmitter-Receiver-JOYROOM-Headphones/dp/B0BL98KXXT/ref=sr_1_21?crid=1PSHXABFHOX68&keywords=headphone+bluetooth+transmitter&qid=1670786577&sprefix=headphone+bluetooth+transmitter%2Caps%2C208&sr=8-21
Got the EarFun Air Pro 3 and they wouldn't pair with the manticore. I tried them using the earbud firmware they came with and when that didn't work I upgraded the firmware but they still didn't connect to the manticore. I'll try a few more times but I'm not expecting them to work.