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AKG K701 and Beyerdynamic DT880:Burn-in is NOT a MYTH!!! - Page 3

post #31 of 38
I'm kind of familar with how this kind of debate develops, as with the classic Asr test:

1. A user compares a brand new and "burned in" pair of K701s, and notes notable differences.
2. Some agree, but while others are skeptical, citing variables like different headphone batches, user error, and the impossibillity of break-in. Most often, they say they need "more proof." Preferably double-blind studies.
3. Break-in "experiencers" are stymied by the potential cost of a second experiment. Skeptics, however, are unable to respond with experimental evidence of their own.
4. As a result of the conflicting arguments, many readers are left neutral

Fact is, for some skeptics, even the best evidence will be unacceptable. Some may harbor a basic disbelief in break-in to start with, since confabulation is so prevalant.
post #32 of 38
Being a burning in believer but a cable sceptic I can't help having some understanding for the burning in sceptics. Seldom subgroup here though.

Live and let live, I'd suggest.
post #33 of 38
Quote:
Originally Posted by spinali View Post
Fact is, for some skeptics, even the best evidence will be unacceptable. Some may harbor a basic disbelief in break-in to start with, since confabulation is so prevalant.
The fact is there has really never been any evidence, other than anecdotal for burn-in. That is far from the best evidence, indeed it is pretty much the worst evidence! From a personal subjective standpoint, I have extensively experienced the phenomenon of audio equipment sounding different from when I first heard it and changing over time, but the fact remains that could just as likely be that lump of fat between my ears. I am only a skeptic in the scientific sense of the word, meaning I have seen no scientific evidence that burn-in is an objective phenomenon. Someone who *disbelieves* in the face of such evidence is not a skeptic, but a thick-head

Kerry M
post #34 of 38
Quote:
The fact is there has really never been any evidence, other than anecdotal for burn-in.
Why?

- 3 AKG K701 headphones (2 brand new, one used as a control) - $900.
- Double-blind study with sufficient n to provide results - weeks, maybe months of work.
- Access to an sensitive amp and possibly pre-amp
- A working knowledge of appropriate methodology and statistical tests

And then, if it shows differences in break-in, it's not proof of break-in - only evidence, for the credibility of the experimenters is untested. I'd be willing to bet that your average Head-Fi'er would be much more willing to spend the cash on amps or upgrading gear. Hell, for that money, I'd be 90% on the way to getting a K1000!
post #35 of 38
Well guys, I'm not sayin this may be, in the end, my being effected by "placebo"(or however you say it), but I've been burning in my k701 with pink noise for two days now, and the improvement is DRAMATIC.

Before using pink noise, I'd concluded that overall, my dt880 was a better headphone. Instruments were more "transparent" sounding on the dt880s, and sweeter to the ears. After burning the k701 with pink noise for 8 hours, I spent a night listening to it, and I was very impressed. Notes gained that sweetness that the dt880 conveyed, and the overall sound signature was very airy, even more so...than the dt880. Now THAT was a first.

I haven't really tested out the k701's bass extension since using pink noise on it, but I will be patient, and hope that it reaches the sublevels that the dt880 can reach. I'm still hoping for a bit more highs sparkle. The dt880's highs is very sparkly to me, and also extends effortlessly, but seemingly at the expense of being aggressive. The k701's Highs are the opposite: gentle, little sparkle, and restrained in range. I'm hoping that the k701's highs can attain the sparkle that the dt880 has, without the harshness. To me, then the k701 would be a perfect headphone, sound wise.

*edit* oh yea, I'm so excited about pink noise now that, even though my dt880s has well over 200 hours on them(via normal listening, not burn-in), I think I will and should spend some time burning them in with pink noise, just to see if there will be any improvements on an already great headphone.
post #36 of 38

I just received my pair yesterday (250 ohm Pro-version) and I honestly didn't like the sound of them at all. The soundstage is great and mids are very neutral and accurate, but there are two major flaws: bass is non-existing and highs are really sibilant and harsh, even though you can hear quite a spectrum of them. So, I am asking here if I should return them back or just start to burn them in? Is it a good idea when I didn't like them too much right from the start? I highly doubt that the sound would change that much.


Edited by SprSkl - 5/12/14 at 11:42pm
post #37 of 38

I highly doubt it too, especially if you think the 880 has non-existant bass. The 880 has very good bass (check any FR graph) and burn in will not bring it up much if at all. It will probably tame the highs slightly, but slightly would not seem to be enough for you. I'd return them and take a look at a Senn HD650.

post #38 of 38
Quote:
Originally Posted by SprSkl View Post
 

I just received my pair yesterday (250 ohm Pro-version) and I honestly didn't like the sound of them at all. The soundstage is great and mids are very neutral and accurate, but there are two major flaws: bass is non-existing and highs are really sibilant and harsh, even though you can hear quite a spectrum of them. So, I am asking here if I should return them back or just start to burn them in? Is it a good idea when I didn't like them too much right from the start? I highly doubt that the sound would change that much.

My thoughts exactly with the 600 ohm premiums.  Mid to low bass is very low volume.  Mid's are clear sounding and detailed.  (I should read the terminology)  High's are not too bad, but at first they were bright.  Maybe I am getting used to them.

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