None of them are super active but here's what I found.
!budgetaudiophile@lemmy.world
!hifi@lemmy.world
!audiophile@lemmy.world
I just noticed that OP is from hexbear so they can't use lemmy.world communities.
Here's some more
!audioengineering@lemm.ee
!musicproduction@lemmy.ml
!audiophile@lemmy.ml