Sennheiser HD700 Frequency Response and CSD Waterfall PlotsSubjective pre-measurement observations:
More bass and thicker sounding than HD800. Probably more 2nd order distortion. 6kHz peak similar to HD800 but more nasty (sharper from top to bottom and also of greater magnitude.) Midrange is recessed. Treble sounds completely wrong. Timbre of high-hats and percussion are wrong. Snares and related percussion don't hurt as much as the prototype, but still not easy on the ears. Tonality makes me dizzy and nauseous - I lasted 2 minutes. Overall technical capability is between HD650 and HD800 - really not bad in this sense. It's lack of neutrality, mainly the recessed mids, and 6kHz peak completely kill this headphone for me. Nothing, including classical music sounds right, because the overtones are presented totally unnaturally.Compared to HD558 (in red)Compared to HD800 (in red)
With the exception of the 5-6k ridge, ringing appears to be well controlled in the treble. The ringing centering at 5.5k and peak at 11k could almost
qualify for the double penetrating ridges of death
. I'll throw up a few full spectrum non-linear distortion tests.