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Thanks you for the info, I searched under Dark audio because I've read about them a while ago, but didn't remember where. Thanks again!
From what i can find, they mount in place of the plastic that's holding the drivers, so it's basically the plastic ring already on your grado's, but longer, putting the driver further away.
You can see them on Head-Fi forum.
http://www.head-fi.org/t/471522/official-grado-alessandro-liberators-carbon-fiber-pricing-announced/210
Thanks you for the info, I searched under Dark audio because I've read about them a while ago, but didn't remember where. Thanks again!