As per Urban Dictionary:
"A techno head is a particular kind of fan of electronic dance music. As their name indicates they tend to be particularly fond of techno. Furthermore, they are often quite buttoned down in appearance, and perhaps even somewhat nerdy. They have a deep love of the music, and go to parties for the purpose of hearing the music that they love, rather than to get drunk or high, or even just to go dancing."
Sounds like something that someone you know (like you 😉) would do, well, you're in the right group 👯