> For the complete documentation index, see [llms.txt](https://itsgreq.gitbook.io/headphone-measurements/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://itsgreq.gitbook.io/headphone-measurements/universum-sfi.md).

# Universum (SFI)

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<figure><img src="/files/neS5JUGZo7lyQ9a06COc" alt=""><figcaption></figcaption></figure>