> 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/k400.md).

# K400

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FB0jO8dDsk29hVuSrKGvw%2FAKG%20K400.png?alt=media&amp;token=7c0465c0-e4d6-4cbf-b9f4-1f7b659f2e2b" alt=""><figcaption></figcaption></figure>