Do speaker cables need a burn in period?

From experience, cables require different amount of burn-in time.  Some of their materials require different times.  I've found that copper wiring takes much less time than silver wiring to burn-in.  Even my phono-cables took a lot time back in 1989 to settle in (maybe 100 hours) despite their small gauge.  My speaker cables took a long time but sounded great as soon as they were plugged in.  My ICs of all sorts take a minimum of 24 hours before I listen to them as their character changes significantly (I'm a cabling beta tester for a manufacturer so I know how raw a cable can sound brand new).  

I have found that directionality in wires can commence with insertion into a circuit whereby the directionality is set by usage.  My cabling has directionality markers which are employed to install them in one direction for all future uses. 

Whether or not the wire is directional from it's inception/drawing out is possible but doesn't appear to make a difference in my cabling.  The wire in my cabiling has been flattened and embossed under high pressure so that it's crystal structure must have been altered anyway.  

I keep my cables directional after first use and continuous use.

Then there are the STEALTH audio cables which uses amorphous metal which has no directionality.  

Indra V16 Interconnect Retail: $7000/1 m RCA, $9300/1 m XLRSakra V16 Interconnect Retail: $12,000/1 m RCA, $16,000/1 m XLR

Those prices are about 10X to 17X my GroverHuffman cables.  No thanks even if they were 200% better.  The reviewer on today's Positive Feedback Mag was comparing them to $9800/m CH Precision ICs.  Maybe they are high end but what if they are not as good?  

pcrhkr  If you think I am out of my mind for believing cables require burn in (some more, some less), look at yourself first!  Big expert you are. 

I've had 20+ years experience as a beta tester for a cable manufacturer (high end cables).  Maybe Belden or Monster cables are so limited in their sound capabilities/materials that burn in doesn't exist for them.  I've tried Monster 300 and 400 series (about six varieties) cables decades ago and couldn't hear a difference after 50 to 100 hours of use.  However, testing out high end, complex design and exotic material cabling requires burn in to extract their stable sound capabilities as well as directionality.  

There are two impartial listeners as a beta tester for GroverHuffman cables.  One is his wife and one is my wife, who doesn't care at all what wire is used or scientific analysis of it.  They only compare wire as to whether they hear a difference and whether they prefer/like it or not/dislike/hate.  

Cable burn-in is a must prior to our testing.  As I have previously emphatically stated, we have tried brand newly made I/C and speaker cables against cables with at least 24 hour burn-in through use.  A/C cables are subjected to connection to refrigerators for several days to a week prior to testing.   So, when we hear very significant differences between the new cables and burned-in cables, we are not "out of our minds" or "foolish" or "wishing it so."   As I also previously stated, low end cables such as Monster cable, Home Depot cable and Blue Jean cable that I've heard, do not burn-in with a significance.  I couldn't tell the difference either between them new or with 100 hours on them.  Their resolution just doesn't allow it.  

Sure, some of you posters say all cable sounds basically the same.  Funny how friends and acquaintances who frequent my music room don't want to leave because they are entranced by the sound of the music as much as the music itself.  I say acquaintances because we host Toastmaster speechathons at our home with guests and guest speakers who don't know me or anything about audio equipment.

So, if the posters have either inferior audio systems, inferior acoustic environments, or inferior cabling, it is likely that there is no apparent burn-in of cabling.   As to directionality, my cabling is only made directional after usage for a significant period.  It is not made directional except for phono use (grounding). 

stevecharm - What makes you such an expert?  I've been a beta tester for cables for two decades and have had at my disposal a dozen major manufacturers cables to compare.  You are correct only if comparing cables which do not have great resolution-I couldn't tell if they burned-in or not. 

Well made, high resolution cables, burn-in at different rates depending on the materials and design.  The high resolution IC cables I've tested take a minimum of 24 hours, A/C and speaker cables longer.  I've already stated that I've compared many cables new to cables with 24 hours to one week use on them and concluded there is a DEFINITE, SIGNIFICANT difference in high end cables before and after burn-in.  

What cables, stevecharm, have you tested before and after use, to make the profound claim that cable burn-in does not exist?