> 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)

Unusual tuning gives crunchy e-guitars a nice forward sound.

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FtTESA6mIuqKzNcDFrRzq%2FUniversum%20(Sawafuji%20Planar).jpg?alt=media&amp;token=333b970f-42b2-468f-b25f-576a42992411" alt=""><figcaption></figcaption></figure>

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2F77MLkgIboetndIpNWoDe%2F_DSC9399.jpg?alt=media&amp;token=6319a099-8b1d-483a-bc7c-d801a6e5d9f4" alt=""><figcaption></figcaption></figure>