Shaffer
Headphoneus Supremus
- Joined
- Sep 7, 2013
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600s being analytical and neutral and the 600s being warm and bassy considering their freq responses are nearly identical...
Let's assume the graphs are accurate for the sake of discussion. The HD650 has more than an octave and a half of bass extension at greater amplitude than the HD600, and the HD600 sees a ~5dB comparative rise just above the presence region next to the HD650. That's hardly "nearly identical."
Meanwhile there is a BIG difference between the K702 and the K712
Seeing how the K712's memory foam pads stand a much greater chance of establishing a firm seal on a dummy head than the K702's relatively stiff angled pads, the scale of the difference can be explained by that factor, alone.
All this being said, it is extremely difficult to measure headphones accurately. Relying greatly on such measurements borders on the ridiculous.