Custom & Vintage SDX upgrade Upgrade from "dfh Superior Custom & Vintage" or "dfh Superior Custom & Vintage - Add on" to Custom & Vintage SDX™. This upgrade version of Custom & Vintage SDX™ can only be bought by existing Toontrack® customers. The qualifying products are "dfh Superior Custom & Vintage" or "dfh Superior Custom & Vintage - Add on". You must have your existing product (dfh Superior Custom & Vintage or dfh Superior Custom & Vintage - Add on) registered in our database to