This might help those who are confused like me. I was initially confused coz the clips at the site: http://www.amtelectronics.com/eng/company.html has similar sounding clips for California as well as Fatal Tube. Here is what the d00ds say to clarify my doubts: his reply Hmm so California emulates Mesa/Boogie (knew this) and Fatal Tube emulates Bogner (AHA!, this is something new) another one: and their reply: Cool, this comes from the person who made those clips on the website. On personal note: both these AMT pedals are NOT AT ALL fizzy/fuzzy etc. They sound very soft and lush.