# Sennheiser HD 550 - Measurements & Official Discussion

**URL:** <https://forum.headphones.com/t/sennheiser-hd-550-measurements-official-discussion/25379>\
**Category:** Headphones\
**Created:** [March 19, 2025, 1:05am UTC](https://forum.headphones.com/t/sennheiser-hd-550-measurements-official-discussion/25379 "2025-03-19T01:05:22Z")\
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**Author:** ![DocStefan](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/docstefan/32/57727_2.png) [@DocStefan](https://forum.headphones.com/u/DocStefan)\
**Post date:** [May 15, 2025, 12:37pm UTC](https://forum.headphones.com/t/sennheiser-hd-550-measurements-official-discussion/25379/16 "2025-05-15T12:37:45Z")

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I can compare the HD550, which I have in my hands now for 2 weeks, to my HD560S bought end of 2023.  
The HD550 sounds slightly more warm and full, but the reduced frequency range of the lower treble makes the common peak around 7-8 kHz much more noticeable.  
“S” and “T” sounds more pronounced to me, while the HD560S’s treble is more consistent.  
As far as I know, Sennheiser released a silent update to the HD560S sometimes around 2022 and 2023, and measurements (including those by oratory1990) confirm this; the 4-5 kHz peak on the “new” model is significantly reduced and more pleasant.  
I’ve spend the HD560S only some EQ on the mid-bass, which makes it sound both warm enough to me, but also balanced in the treble region.

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