How much does volume matter when breaking in amps and cables?

They’re not fat! They’re chunky. 

Volume is required to obtain sufficiently high voltage and current. Otherwise cables never break in. Duh!

I would have figured since cables need breaking in (plus, I've heard the rca/xlr connectors on the cables needs to break in as well), that one should "break-in" each input/output that will be used on a pre amp. 

Why would you need to “break in” electronics?  There are no moving parts.  Speakers, yes:  electronics?  I never heard of that!  This is not something you can actually hear---or even measure.

If I hooked up an amp that was broken in to an identical set of speakers and one thst was broken in,  you couldn’t tell the difference.  Heck, at the same volume levels, no one can tell the difference between amps at all.  

Attention! The Fasten Seat Belts sign just came on. 🔛

Again, ZARATHU, if you read my original post, I do not want to debate "break-in".

Here is my experience: If a component does not sound good "out of the box" I do not believe any amount of break in will change my mind. However, I notice components open up a bit more after some hours of playback. Now, I'm not into the 500-800 (or whatever) hour deal, but I think things slightly improve with a few hours of playback. The rough edges (floabt) smooth out. 

In my original post I was wondering if volume has an effect on break in or is turning on the component with low volume sound enough.