If it's purely an engineering challenge why bother designing yet another DAC?

Thats not break in, thats break it now if its got a defect, not when we need it. Thats reliability 101 nothing to do with components breaking in. You know this so why do you deliberitly confuse the issue?
 
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They will certainly break-in all the electronics, just to make sure they do not break, and that it still performs to spec after use. Hard to replace once you shoot it into the sky.

dave

"Burn In" is a test procedure to insure stability/reliability/suitability, nothing more.
It's used in many fields, not just electronics.

However, some individuals with nervous mental issues (OCD?) are prone to worry over things too much, and with internet communications, spread their beliefs to make others nuts as well.
 
Do electronics makers run there gear for 100 hours before they ship them? Does your TV or iphone, car or any other non audio electronics need to burn in before it works properly? No!

The speakers i do get at least 200 hrs of low level break-in and get measured at least 3 times (for pr matching).

In commercial electronics the longest i have seen for electronics is 72 hrs.

dave
 
Does your TV or iphone, car or any other non audio electronics need to burn in before it works properly? No!
Car - yes!
If I believed in phono burn-in, I'd write a CD with Audacity. It would contain pink noise, plus RIAA pre-emphasis (they probably more or less cancel, which is sufficient for our purpose). Then insert a 100:1 divider before the phono input, set the CD player to repeat and done. Guess why I haven't done it so far? Because my phono preamp is 25 years old.
 
You will be surprised how many (it not all) designer I know will privately agree that standard "static" measurements have little refection on sound quality (try as they might to measure and "quantify" sound quality) - but just as in so many walks of life are too afraid to have there voices counted... Life is just so much easier if you don't place yourself in the firing line... and it can get VERY vicious very quickly!!!

The 1980s called and want their discussion on measurements back!

Seriously, it's 2020, we can discover exoplanets and measure gravitational waves. Are we really still recycling 40 year old audio discussions with zero forwards progress in the meantime?

I do hope that some designers have found correlations and are keeping them secret rather than what appears to the outside world. Otherwise it's a sad state of affairs.

And just for clarity I have no issue with people preferring their XYZ despite what the measurements say. Personal choice is exactly that. I get peeved with a few on here who keep telling me my system isn't good enough which is why I don't realise I need an XYZ. And I think the word 'better' should be banned from this forum as its meaningless as soon as ears are involved. Otherwise it's entertainment and people have the right to be entertained in any way they want.