SilverEars
Headphoneus Supremus
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- Sep 18, 2013
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If you compare Rtings 650 and 6XX measurements, there are differences. 6XX has slightly more 3k (like the 600), and lowered 5k (like the 660S). This maybe why 6XX sounds inbetween 600 and 650 in tonality. It sounds less warm than 650 from what I recall (6-700hz is lower on the 6XX), and I attribute that to the greater 3k presence.I don't doubt that shadow revisions might happen, but I don't understand why a headphone company would choose to do that. Maybe if they're secretly making them worse? Otherwise, why hide that they're making the headphones better/different? It makes little sense from a marketing perspective, at least so far as I can see it.
One of my (conspiracy!) theories is that the HD 6XX is made of HD 650 parts that don't quite fit into spec or that just have looser tolerances. This would explain why they're willing to sell them for less than half of retail, and also why some people claim they sound different from each other.
Even the sound rating between 650 and 6XX are different with Rtings. This means that they think there are differences in sound.
Rtings measurements are not fully conclusive however. There needs to be more samples measured to get an idea of consistancy. You can have variance between same model headphones as well. They are not identical responses, look at the differences even between the drivers.
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