There are a few. The delightful Mundane Accomplishments thread (Show us your most recent mundane, stupid, non-MST3K accomplishment - #56 by Pearls_Mint) has kind of turned into a Deep Audiophile-Nerd Equipment thread.
Edit: to be clear the initial audio equipment post was totally on-topic, but then some people got REAL excited about audio hardware and ran with it. It’s nice that they’re excited about talking about it, anyway!