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Burn in question and evaluation before burn in

We all experienced sound transformation before and after a new equipment or cable is burned in, however, I am wondering if there is a general rule as to which direction any burn in would be heading? Specifically, I am interested to know would sound generally go smoother/darker or brighter/more transparent after burn in? I am thinking if there is such a rule, it would be valuable to know for evaluating products.
wenrhuang

Showing 3 responses by rodman99999

rodman99999
5,996 posts
 
Exactly!! =8^)
rodman99999
5,996 posts
 
Right on the money Albert! And any good designer will voice his equipment with the presentation of the components AFTER stabilization in mind. Hopefully- transparency will be their goal.
rodman99999
5,996 posts
 
Mr W- I've had passive and active components that went through 4 or 5 changes in presentation before reaching stabilization. Some sounded ridiculous at times. Be patient(at least 200 hrs) before listening critically, and deciding whether you like the component's presentation or not. The best capacitors and cables use high grade dielectrics(ie: polypropylene/polystyrene/Teflon) that don't absorb/discharge energy as quickly. That means "burn-in" takes longer too. (http://www.national.com/rap/Application/0,1570,28,00.html) Also look at the paragraph about Dielectric Absorption here: (http://www.sbelectronics.com/application_notes/cterminology.htm)
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