I have found something that beats all other tweaky-tweaks!!! Including Mpingo wood, Marigo dots, magic marbles, colored stones. All of it. And it was fairly cheap too. $17. I went to the local rock shop http://www.rockbarrell.com/ and bought a small meteorite. 1 and 3/4 inches by 1 and 1/4 inches by 3/4 inches. From a meteor that hit Earth in the 1500's. I placed it on my DAC and under my preamp. The change was awesome. Music now sounds OUT OF THIS WORLD! It doesn't seem to work on the turntable though. Maybe with vinyl, there is no room for improvement. Ò¿Ò jim...
I think you are onto something, Jim. My suspicion is its the ultrahigh density that is required for a meterite to survive space flight. I think you may be onto something: meteorite material based discs & cubes could be the next big thing in high end audio. :-| akhilesh