If you have a CD Player, you need to do this periodically...

@tonywinga ,

Whether it is eddy currents or static, the more error correction needed while reading the disc the more the music is affected

Certainly plausible.  The premise seems to be that these test/conditioning CDs have an effect on the entire audio system chain rather than only the CD playing portion. Whatever the case may ultimately be,  the overall end result was a net gain in my audio system.

I would encourage those who are curious to spend the 20.00 dollars and come to your own conclusion.  

Charles 

Thank you @charles1dad 

my other favorite Charlie from Ayre tweak cost $20 less and works great - unplug your modem and entire home theater system... 

I’m sorry to go on a tangent…but with all the talk here about the need to “de-magnetize” I’m trying to understand the concept particularly when a big buck hi fidelity cable company is marketing their product as the new paradigm in sound.

But don’t (from what I’ve read in the ads) they basically have alot of magnets in their cables?  
 

PLEASE CLARIFY 

The most obvious improvement I've made using demagnetization has been the Walker Talisman.  I bought it not knowing how effective it is at the speaker terminals, just waving it back and forth for 5 to 10 seconds.   That really opened up my system.   My friends purchased it just for that reason after hearing what it did to mine (and theirs now).  Prior to every listening session.   My friends also recommended waving it over (one pass only needed) speaker cables, power cables and ICs.  Yes, I most notice it over the speaker cables, despite mine having incredible shielding.  Must work on the exterior static.   I barely notice the difference when waving it in front of my speaker drivers as recommended.   Back the terminals-wow!!!

I switched from using the Talisman to the Furutech Destat III.  It eliminates static from the plastic and vinyl when the latter are held in one's hand (not on the platter).  There is a definitive Youtube showing why and how.   

I did not hear much if any difference using the original Furutech CD demagnetizer previously mentioned.