I would suggest that a bit of skepticism is in order whenever someone whom you do not know claims that they have fully broken in a cable, component or speaker that requires many hundreds of hours of break-in time.
For example, logging 750 hours on something requires it to be run 24/7 for a full month. 1,000 hours is a long time and a concerted effort has to be made to ensure that those hours are actually logged. It was worth it to fully break in my Kimber Select 1030 and 3038, as they did not fully open up and smooth out until they got a real 1,000 hours on them, but it was a true pain in the ass and a six-week project. Breaking in speakers and speaker cables is a particular inconvenience, as most of us don't have a barn in which to put them where they can be run in 24/7. Even wiring one speaker out of phase so they don't make noise during break in is a pain, as the speakers have to be faced nose to nose for break-in, but then pulled apart, the leads flipped on one pair of speaker cables, and the speakers repositioned if, during the break-in period, the owner feels like listening to music. Von Schweikerts and Verities, to name just a few, take 500+ hours to break in. Given the inconvenience of break-in, speakers should be, in my opinion, broken in by the manufacturer, and I am perfectly fine with them working the added cost into the price, as the current failure of the industry to do this is intolerable (at least to me) ... "[H]ere are your new speakers. If you run them 24/7 for three weeks, they will sound like they are supposed to sound. Thanks for your $30k and good luck".
My apologies for the diversion from your question.