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Posts posted by Gu Sensei
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(I read the welcome message two years or so ago and have been lurking since. I finally joined up as I figured this would probably be the best place for information/discussion on the 009s but have held off posting until I had something substantial to contribute. I’ll briefly summarize some impressions but am guessing these frequency response measurements will be of more interest.)
As I have posted elsewhere, I have found them to be quite simply the most resolving, capable, and transparent headphones I have ever owned or tried. I have never experienced such precise imaging nor been able to so clearly observe dynamic shifts or soundstage differences in recordings. Everything sounds effortless. Probably, I am most impressed with just how voiceless these phones seem. Every other ‘neutral’ pair of headphones I have tried has had some character beyond simple frequency response variations that seems present going from track to track. I am at a loss to describe any sort of sonic voice the 009s are adding to the listening experience... except in one area; their treble response.
I do find the treble to be a bit troublesome and with their extreme resolution and clarity, issues with poor or bright recordings get exacerbated. I have been tinkering with equalization to smooth out the treble and pull it back. These graphs are very helpful to that end but I am completely new to this and hope some others will be equalizing and posting about the gear they are using with graphs of their adjustments.
Since their release, I have done the occasional google.co.jp image search for some frequency response measurements and finally found some. These were posted in this thread which is a discussion forum on Stax but I am not too clear on the methods for getting the measurements.
(not sure why but the measurements are not all being shown. clicking on them brings them up though)
Electrostatic Headphone Measurements
in Headphones
Posted
Awesome work Tyll, your efforts are much appreciated! Thank you to those that contributed gear as well. What an excellent community.
If I were stateside, I would love to contribute to the project and send over my SRM-717 or 323S to compare with the Blue Hawaii. Shipping to and from Japan would be brutal though.
I and likely quite a few others would be very interested to see how the 007s and 009s perform on a Stax amp and what differences show up in the measurements in comparison with the Blue Hawaii. There already is a bit of discussion on whether the 009s are $5000 phones or a $10,000 system. I feel perfectly content with the two amps I have but would like to see if the measurements reveal any deficiencies.
TMoney, if there is a Stax amp not too far from Tyll, that might be a reason for him to hang on to your 009s a little bit longer.