Natalie is on the right track but some people can't dissipate the sound that a "burning system" creates. As such, you can use an old receiver with some easily procured "dummy loads" to do the same job. Not only can you pump more power through these for a more effective and quicker "burn in", you don't have to deal with any type of noise or signal leakage even within the same room.
As to the basic question, YES, burners do work. Different burners work at different efficiency levels. As Buckingham mentioned, Mobie's work very well for interconnects. While i have not used an Audiodharma first hand, my initial impression going by the information that i was able to learn about it is that it MIGHT be effective on interconnects and less so on speaker cables and power cords. Keep in mind that i'm qualifying this statement based on the info that i've been able to find out about it, so nothing is set in stone. At to the old Duo-Tech's, i don't think much of them.
Also keep in mind that many of the "naysayers" that repeatedly post to this type of thread have probably never used or experienced the results that a "burner" can produce first hand. I am willing to bet that they would have a different point of view if they had experienced the differences first hand. Sean
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