Sure enough, small problem being that signal type passing through it (what the OP suggested) does not stress it at all, in any way or manner.
I suggested other, more drastic Stress Test protocols (including smashing it aginst the floor), which would be WAY more related to durability (I want it to fail early rather than late) or sound quality (even if only by unplugging ribbon connectors, cracking PCBs, etc.) but that´s not what the OP expected.
I don't think so. I have proposed possible physical explanations for some of those claims, and tried to formulate the explanations in ways that are both testable and falsifiable (in order to make them qualify as scientifically formulated hypotheses). Bybees, wire orientation, Schumann frequency generators, and purple felt pens on CDs, all should now qualify or be very close to qualifying as legitimate scientific hypotheses.
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Warm Up and Burn In are completely different. It's only natural that the behavior of components changes because the operating temperature is different.
I'm not a believer in Audio Science Review, but I think ASR should thoroughly debunk the faith in burn-in. While there may be a possibility of some measurable change, the reasons people hear differences between before and after burn-in are psychological effects.
^^^I think we should have perceptual scientists debunk that.
BTW, ASR is incapable of debunking much. They sure don't know how to measure some likely relevant physical phenomena. Plus, they sometimes add their own bunk.
Sounds like you have no relevant experience. Others who do, know better.
That would be off topic, as are many of your posts in threads you hijack. No further comments from my side.
Compare two identical, new DUTs. Find them indistinguishable.
Burn in one of them.
Compare both DUTs again. Find them distinguishable.
I don't understand the reasoning behind this statement.
Are all measurable changes due to burn-in inaudible?
I have a musical piece that sounds really aggressive when the CD player or amplifier haven't warmed up.
You may use it for such a test.
(from EMI 724357533225, Paganini's 1st of the 24 Caprici for violin, F.P. Zimmermann playing)
https://www.dropbox.com/scl/fi/azb7...ante.wav?rlkey=6x704furidmskqocbz24bevod&dl=0
George
@tombo56
Here are some quotes from others in the forum on the subject of going off topic and or threadjacking:
-------------------------------------
Many times it is unavoidable and natural since the thread is similar to a conversation. As long as things wander back on topic before too long.
---------------------------------------
Threadjacking is when you make an off-topic post with the goal of derailing the tread.
-----------------------------------
I believe the above were intended to serve as 'advisory opinions.' Don't think I qualify on either basis above.
However, in one recent thread one or two people wanted to keep giving technically wrong and or confusing information. Unfortunately, multiple people caused it to take longer than it should to get the facts across. I got the blame, but at least the thread was left with technically correct information so that lurking readers could be properly informed.
https://www.law.cornell.edu/wex/advisory_opinion
https://www.diyaudio.com/community/threads/threadjacking.87117/post-1013669
https://www.diyaudio.com/community/threads/threadjacking.87117/post-6323360
Here are some quotes from others in the forum on the subject of going off topic and or threadjacking:
-------------------------------------
Many times it is unavoidable and natural since the thread is similar to a conversation. As long as things wander back on topic before too long.
---------------------------------------
Threadjacking is when you make an off-topic post with the goal of derailing the tread.
-----------------------------------
I believe the above were intended to serve as 'advisory opinions.' Don't think I qualify on either basis above.
However, in one recent thread one or two people wanted to keep giving technically wrong and or confusing information. Unfortunately, multiple people caused it to take longer than it should to get the facts across. I got the blame, but at least the thread was left with technically correct information so that lurking readers could be properly informed.
https://www.law.cornell.edu/wex/advisory_opinion
https://www.diyaudio.com/community/threads/threadjacking.87117/post-1013669
https://www.diyaudio.com/community/threads/threadjacking.87117/post-6323360
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I don't know why you quoted twice on the same message...
Anyway, my point was measurable changes due to 'burn-in' (not 'warm up') would not be large enough to hear the difference.
I do believe it's not your equipment, but mostly your brain, and I would like to see a scientific study prove/disprove this.
If any scientific studies do not exist, and you still think it's not true, I'm totally fine if you believe it's untrue.
I don't disagree with you at all, you can hear the difference that I don't think I can hear, so please do not quote any more. Thank you.
Sometimes that works, but its not a general solution. I mean, suppose the DUT includes a capacitor where DA has reached an equilibrium state under circuit operating conditions? How is it to be measured, and who will believe it can be audible?
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Presumption is that the required "burn-in" time is much longer than the "warm-up" time.
Otherwise burn-in and warm-up effects would be indistinguishable.
Here I mean "warm-up" to include any changes during a short period after powering on,
not just thermal effects.
Otherwise burn-in and warm-up effects would be indistinguishable.
Here I mean "warm-up" to include any changes during a short period after powering on,
not just thermal effects.