Why does it take so many hours to brea in arc preamps and amps?

" To all those that say the manufacture has specified a certain "break-in" period, please link the rest of us to those manufacturers links, instead of it being just personal opinion. "  Georgelofi

A second to rsv4's previous post.

Quote from Ayre CX-7eMP owners manual:
"100 to 500 hours of music played through the system will ensure full break-in.

Due to the manufacturing processes used for the printed circuit boards, wires, and capacitors, a break-in period is necessary for the CD player to reach its full sonic potential."

Manufacturer's link:
http://www.ayre.com/manuals/Ayre_CX7eMP_Manual.pdf

Does this meet your criteria George?

Dave

"You and geoffkait need to get together and write a book on hifi voodoo."

Better Geoff than a pompous flat-earther like yourself.

Get over yourself, everyone else already has.

Dave

So now Charles Hansen is unqualified or just plain lying! You and Bo1972 are the Masters of the Audio Universe. Nobody’s buying it in either case.

Dave

"Burn in" is a very different thing than "break in". Burn in usually involves temperature cycling from an extreme high temp to an extreme low temp in a controlled environment chamber using hot-to-ambient and ambient to-cold temperature ramps determined by an engineer. It is used to weed out early-life-cycle component failures (faulty components tend to fail early in their life cycle) and solder issues (cold solder joints) or instabilities in circuit performance due to temp variations. It is usually done with the unit powered on while software tracks critical electrical performance parameters over time during hours of repetitive hot/cold cycles. It is also known as "accelerated life testing" and is critical to ensuring consistent and reliable product performance in mission critical applications like the computers that run Wall Street, government communications/data storage, large internet hubs, etc.

How do I know this: 20 years of running business units/divisions that built thousands of mission-critical computing and networking products for IBM, Cisco Systems, Lucent, Nortel, Sun Micro, etc.

If all audio products were burned in this way, break in would be minimal as it would only require enough time for the temp to stabilize as the components would already have seasoned due to the accelerated life testing. They would also cost a hell of a lot more.

Dave

George,

Your posts speak for themselves. Knowledge as thin as a molecule of Graphene and reason one thousandth the thickness of that.

All of your challenges have fallen flat. Then the rapid degradation of your defensive retreat. What’s next, "Nuh-uh. You are!"

Dave