JK-47
100+ Head-Fier
- Joined
- Jan 2, 2015
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- 68
oh...
Though these frequency response and THD measurement comparisons are also included in the video embedded in the first post of this thread, here are they are (click on the graphs below to see larger versions):
NOTE: The measurements above reflect diffuse field correction.
They do sound the same, and those measurements certainly support that.
They feel the same, too. However, I'd say the HD 650's paint finish is fancier, as it has a glittery metallic look to it, whereas the HD 6XX's finish is matte--I'm guessing the HD650's paint finish would be more expensive to do. The grill bezel on the HD 650 is glossy, the HD 6XX's grill bezel is matte.
Outside of those differences, the headphones feel the same and sound the same. Both are also made in the same factory in Tullamore, Ireland.
Audio measurements were made using:
- G.R.A.S. 45BB-12 KEMAR with anthropometric pinnae and low-noise ear simulators
- Audio Precision APx555 audio analyzer
- Rupert Neve Designs RNHP headphone amplifier
- Herzan acoustic enclosure (custom)
The falling value of used 650s shouldn't matter, since no one in their right mind would want to sell one.
An HD 6XX + Schiit Modi Multibit + Schiit Jotunheim/Vali 2 = End game for most.