Phono pre "Break-In" process? Necessary?

Just out of respect for Ralph Karsten, it's Atma-Sphere, not atmosphere.

Well, there are obviously lots of reasons why a system might lack focus including, but are not limited to, lack of vibration isolation, lack of sufficient or correctly placed room treatments, disregard for cable and fuse directionality, disregard for absolute polarity of the system, there is at least one problem in the system, disregard for the magnetic field produced by large transformers, insufficient damping of circuit boards and CD transport mechanism and non optimum speaker locations.

geoffkait,

Your right - the odds are against having things work properly.

Roger 

Of course there is break-in required to get the best out of ANY electric or mechanical gear!
It's ludicrous to think otherwise. 
But how long and how much difference it will make varies. 

But who cares? Just enjoy it from hour 1 and know it will improve!

Don't waste time "burning in". Just enjoy it from the start. 

Life is already too complicated to worry about this. 

Following this thread has lead me towards ‘burn-out’. Regarding ‘burn-in’, as a function of use, if we did not follow the process, we needn’t purchased the product.