There is no single famous source behind this clip, which is part of why it works so well as a generic reaction sound. The phrase is a familiar part of livestreaming and voice-chat culture, where speakers constantly check whether a new headset, filter or setting has improved their audio. Shared as a short soundboard clip, it spread through gaming videos, stream highlights and chat reactions, where it is used to mock an awkward audio fix or to signal that a setup change is about to be tested. Its everyday wording keeps it useful long after any one stream has ended.