> 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/ultrasone/hfi-2000-+he500-pads/hfi-2000-+-aftermarket-he500-pads.md).

# HFI-2000 (+ Aftermarket HE500 pads)

Very dark sound, mids are very distant and smooth. Weirdly but interesting.

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2F6kbHwkDagFXsjJ2WDmXr%2FUltrasone%20HFI-2000%20%2B%20Aftermarket%20HE-500%20Pads.jpg?alt=media&amp;token=27a3bb5a-31f4-43e8-8720-ee2f3e5b44a7" 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%2F7cnmRZnexPnAO5kSGh8x%2Fimage.png?alt=media&amp;token=db0f4fe9-27a7-4b4a-a8ca-0d34354fe999" alt=""><figcaption></figcaption></figure>