Regard cable burn in, i had a chance to let my QED RCA get burn in recently via Nordost Vidar for 3 days straight.

Before this i coudnt hear or maybe didnt remember wat my cable sound like perhaps due to the long time needed to burn in. but after burning it with vidar, the sound felt different, to me it was improvement. wat i perceived was more natural vocals and slightly better bass. My brother said the staging felt wider but i didnt perhaps i just didnt remember.

I was told that my cable is practically 95% burnt in... just play it for 150hrs to get 100%. I was also told, what happen in 3 days, might take 10yrs of normal listening to achieve.

Just sharing some my experience, dun flame me.