> 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/akg/k4.md).

# K4

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FjUguun331j145oYVavAT%2Fakg%20k4.jpg?alt=media&amp;token=3065b20f-0ff8-4c28-9c98-2a79a745d7b0" 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%2F20M9PBdIDEhTLjzaxj3d%2F_DSC9448.jpg?alt=media&amp;token=4891245d-9e70-4db2-b6da-698121d8e80e" alt=""><figcaption></figcaption></figure>