Sonic Extensions is a brand new line of amazing products for Omnisphere built by Spectrasonics.
Since Sonic Extensions are built for Omnisphere 2 specifically, Omnisphere 2 must be registered to your user account as well as installed and authorized on your computer to be able to purchase any Sonic Extensions. If you have Omnisphere 1, you'll need to upgrade to Omnisphere 2 in order to purchase Sonic Extensions, as Sonic Extensions require Omnisphere 2 for compatibility.
If you have not purchased Omnisphere 2 yet, please contact any of our resellers near you for the best deal (Sweetwater, Guitar Center, Sam Ash, or click here to find other resellers near you). Once Omnisphere 2 is registered to your user account, installed and authorized on your computer, you should be able to purchase any Sonic Extensions from the Sonic Extension webstore.
If you have already purchased Omnisphere 2 and it's currently installed and authorized on your computer and still cannot purchase any Sonic Extension(s), please contact email@example.com for assistance.