Sonic Defender
Headphoneus Supremus
That is why I ultimately trust my ears. I still like measurements and will never disregard them, but they are simply part of the picture, not the picture itself.
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Great post.
The 10k spike.
I'd just like to chime in with what I've already said previously, that I've had multiple MDR-Z1R's in my possession now and can confirm that not only did I not perceive any notable 10k spike in any of them, the headphones are actually among the most inoffensive I've actually ever used among high end cans. All the MDR-Z1R's I had in my possession were easy to listen to and completely unfatiguing except at ear piercing volumes, unlike for example my HD800, HD800S and at times, T1.1's. Really the only high-end headphones I've used in recent memory that were less fatiguing or harsh than the MDR-Z1R's, are the LCD-2's and LCD-3's, both of which I felt lacked a tad in upper-frequency sparkle.
Differences between copies.
Regarding differences between copies, the ones that I had all sounded almost identical. The very, very slight differences I could percieve, I felt could be down to differences in the earpads, not necessarily the actual headphones themselves. The earpads are all hand made and stitched, and as such there are differences among them. One pair I had, in particular, had far slimmer earpads, which I felt might have made them sound a touch more forward, intricate and a touch less bassy.
An image showing the sort of thickness differences possible.
I should stress though that even when A/B'ing between the different pads, where the extremities between certain pads were quite dramatic, there were still only very, very subtle differences in sound. Very hard to pick up, including in blind A/B'ing. Ultimately of the MDR-Z1R's I used, the actual units themselves sounded near enough the same. Certainly, none exhibited anywhere near the huge 10k spike that Tyll has in his measurements.
Other spikes.
Regarding picking up other spikes and responding to Marv specifically, who wrote;
The answer to this is context. If you actually compare Jude's measurements of the Z1R's to other high-end headphones, you'll notice other prominent headphones actually have bigger spikes in the 5k to 20k range, including the HD800 and Utopia, which both have a fairly big spike or bump around the 6k and 14k regions. The biggest difference, however, and why I mention context, is that these other headphones also have less prominent db in almost all other areas of frequency comparative to the MDR-Z1R. So the reason these 3k, 4k etc, bumps that Marvey mentions, aren't as glaring or notable in the MDR-Z1R is likely because there's more emphasis on bass, mids etc, to balance things out. No doubt these bumps elsewhere in the frequency range, were included to compensate for the added bass presence and quantity, which is probably why the Z1R's still maintain a surprisngly wide soundstage, high level of imaging, and overall tonal honesty, despite being overall somewhat bass emphasised. I don't personally find them as shrill, thin or high frequency hot as cans like the TH900's and LCD-XC's can sometimes sound, both of which I'd say are also fairly bass emphasised headphones.
I'll just refer back to my rough mega comparison which uses N00b's MDR-Z1R measurements (which are extremely similar to Jude's) to highlight some of the above.
EDIT: Didn't realise Jude's post was in this same thread. I thought I was responding to a different thread altogether, hence some of the repetition of some of the points!
leaving your subjective impressions aside and looking at the comparative frequency response chart, the Z1R has the most boosted bass, recessed midrange and prominent spikes at 2k and between 3k and 4k and then at 10k. the hd800 has the notorious 6k spike, but it's apparent that the z1r has the most uneven frequency response out of those four totl cans. isn't that why tyll was so critical of it or am I missing something?
leaving your subjective impressions aside and looking at the comparative frequency response chart, the Z1R has the most boosted bass, recessed midrange and prominent spikes at 2k and between 3k and 4k and then at 10k. the hd800 has the notorious 6k spike, but it's apparent that the z1r has the most uneven frequency response out of those four totl cans. isn't that why tyll was so critical of it or am I missing something?
i don't look it that way. How about recessed mids of LCD-4 and Utopia of that comparative FR?
p/s: Your Tyll's worshiped is quite apparent.
You're missing something.