Full Product Description
Frequency Response Measurement & Correction
Looking at the measured frequency response, the bass starts to roll-off at 100 Hz and is -8 dB down at 20 Hz. Relatively smooth response moving up in frequency with a small broadband dip in the 200 Hz to 900 Hz lower midrange which gives the headphone a bit of a laid-back sound. Then a little peak in the 1.2 to 1.4 kHz range which pushes the soundstage forward a bit in the mix. This is followed by a dip in the ears most sensitive range between 1.9 kHz and 3.5 kHz and then the most pronounced peak of the headphone response (+4dB) in the 4 kHz to 6 kHz range. This boost in the presence level makes the headphone almost harsh sounding in the upper midrange/lower treble region.
Engaging the high-resolution convolution filter transforms these headphones into an accurate sound reproducer with a ruler flat frequency response that extends from -3 dB at 20 Hz to 3 kHz +- 0.25 dB tolerance and with a +- 1dB variation out to 6 kHz. With the filter, one can take this excellent headphone to a new level of listening experience. One can listen all day without a hint of harshness with the neutral filterset. The neutral plus treble extension takes advantage of the neutral response but further extends the treble range of the headphone for a more intimate presentation with an enhanced 3D soundstage.