> 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/sennheiser/m2-aebt-wired-+-aftermarket-leather-pads-anc-on/sennheiser-m2-aebt-wired-+-foam-spacers-inside-the-ear-pads.md).

# M2 AEBT - Wired + Foam Spacers Modification

3mm thick, closed-cell 'craft' foam spacers installed inside the ear pads

Detail and treble are both lacking.\
\
The pads on these headphones get flat quickly after a couple years of use. This is proven by my previous graphs of the same headphone without foam spacers in the pads. \
Measurements in different positions were wildly erratic and inconsistent.  

Now, with spacers, channel matching and measurement continuity are vastly improved. 

I recommend everyone who owns one of these to add foam spacers inside the ear pads... and boost treble with EQ. 

<div><figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FSu37CGmnVKDI4iEcX8q6%2FSennheiser%20M2%20AEBT%20%2B%20Spacer%20-%20NC%20Off.jpg?alt=media&amp;token=2aef8399-9bf7-4539-996b-bb80989f7120" 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%2Ff8t3gRoCRsdCz1dxg4H1%2FSennheiser%20M2%20AEBT%20%2B%20Spacer%20-%20NC%20On.jpg?alt=media&amp;token=57a8f4e8-ac2e-49e7-9503-8b774f088e3e" alt=""><figcaption></figcaption></figure></div>