Superbooth 2016: Addac Systems EHX Collaboration Modules A look at the Electro Harmonix collaboration modules Posted by Laurie Monk on April 04, 2016 Get link Facebook Twitter Pinterest Email Other Apps Superbooth 2016: Addac Systems EHX Collaboration Modules A look at the Electro Harmonix collaboration modules Superbooth 2016: Addac Systems EHX Collaboration Modules