# AKG K551 + foam spacer

Same urethane foam treble attenuater plus a foam spacer ring stuffed inside the ear pads - gives sub bass a healthy boost and opens up soundstage slightly. \
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Resolution and especially soundstage are lacking.

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FtSHRXBWrYMbhI5t0qEGo%2FAKG%20K551%20%2B%20Foam%20Spacer%20Ring.jpg?alt=media&#x26;token=395e2b62-35c5-4855-a1c7-29db151eb37b" alt=""><figcaption></figcaption></figure>

![Detachable remote cable replaced with permanent silver plated copper](https://31762434-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M4NrSugToAwYkW0a8hV%2F-MbVCVPJZnqKZLBdVqDG%2F-MbVCZWwlPH8xAsq4NQp%2F_DSC5851.jpg?alt=media\&token=88e86d19-cbc9-41de-ad78-32db968511cb)