I was actively looking for something like this and had found this last week. Pine buds pro is another option that gives you quite a lot of control with access t

I was actively looking for something like this and had found this last week. Pine buds pro is another option that gives you quite a lot of control with access to the firmware. But I cant seem to get my hands on any of them. Either the custom duty doubles the price or it is too costly. Nonetheless open-source ear buds is a big need for the engineering and hacker community.