tldr; HD600's warmer sibling. Slightly more bass, same magic. Pick your flavor.
$349.56 on AmazonScores based on sentiment analysis of topic-related comments
Best praise vs top criticism for Sennheiser HD 650
βWelcome to the QC of what's supposed to be premium luxury products. Was a big part of what relieved me of the illusion of this hobby. Extreme high prices, low quality. HD650 for 10+ years strongβ
βNo offense, mate.. but you have both the bass and the treble boosted.. No wonder those boring headphones suddenly sound better. They lack both bass and treble.. and can really use some EQ: [https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-png.101560/](https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-png.101560/) [https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-deviation-from-preference-png.101561/](https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-deviation-from-preference-png.101561/) I have the same amp, and it's an amazing piece of technology, but it doesn't have any magic sauce to improve headphones. What you need is headphones that you actually like.. or an equaliser that lets you play around with the FR of your HD650.β
3,900 Reddit opinions analyzed β’ Last updated 4/5/2026