Just started to burn in my Furutech GTX d - r by putting it on my refrigerator freezer . I will let it burn in about 350 hrs or 15 days. I was not going to burn them in at all and let the components burn them in but that would really take forever or never burn in at all especially on my CDP.. In about a week or so i will put the refrigerator plug to the bottom outlet of the Furutech and will leave it there for the other week. Then i will repeat for the other 2 Furutechs.