"I have found some information stating it would take 800 to 1,000 hours to sound excellent"
No offence, but it just doesn't sound logical.
I hope you do not believe this statement which is very hard to swallow to say the least.
Is there something in writing about this from the manufacture, and if there is - what does it say exactly .....and the explanation why???
I personally did experience a few components that benefited from the extra burn-in time....but never to that extreme.