Is this for real?

Yes, it is typical of the "both sides". We have two people who have used the product and think it works, and two that haven't and think it doesn't. Now if someone wants to chime in who has used a product like this and think it doesn't work, I'm happy to accept that opinion too.

It is good to be skeptical. Cardas deas have a good ear though. If there was no difference/positive sonic impact, he would not be selling of have his name attached to this disc. I was skeptical at first, but I figured that for $20, it is worth a shot. Additionally, Ayre would not be promoting this disc if they did not think it had a positive sonic impact on performance as well.

KF

it works. Have the XLO disk.

My friend Joe in Tennesee said his top of the line Denon/ Paradigm Reference 100 home theater was lackluster in sound and " missing something" As I was on my way down, I said I would bring something that might help him out. I took my Sheffield Labs MDMS system conditioning and degaussing cd. After initial listening, we popped in the cd and left the room as the " magnetic domain matrix signals "did their job on the system and not our ears. Afterwards, he was amazed at the results, which were basically a cleaned up,i.e. more detail out of blacker less muddy background livelier as a result sound. He wanted one immediately and I referred him to Music Direct as they have a degaussing cd for $20 or so,and I haven't seen a Sheffield for sale for a number of years. I run it on my system every week or so and have always found it to be beneficial, to the point where I find myself thinking " Ok, something is wrong here. Oh yeah, get the cd." $100? If mine breaks and there isn't something available that's effective for $25 or so, I would do it. Don't know why or how it works. The vinyl version works as well, in my opinion. Have fun.- Gary

I also have the XLO disc and it has been stored without any use for the last few years. After seeing this thread I sought it out and put the system through the test tones, etc. After using the so-called demagnetizing sweeps I put on a CD and low and behold the highs were clear and precise. I recently thought I might need an EQ to fine tune them and bring them out more but now I don't think I do. Sounds really improved. It will stay out front and in regular use. I was sceptical also and just forgot I had it. Thanks for the post.