Evolution of the (Super) Spring Theory reverb. Brandon with the Super Spring Theory set to spring reverb mode. Check out the product page for more details. By Brian Marshall|2018-05-04T18:41:38+00:00March 1st, 2016|Demos, news| Share This Story, Choose Your Platform! FacebookTwitterLinkedInRedditGoogle+TumblrPinterestVkEmail About the Author: Brian Marshall I'm Brian, founder of Subdecay, effects designer, janitor and whatever needs to get done do-er.