Ever since the the big LA meet and my experience with the Sonett 2 and First Watt F3 over the past 2 weeks, I've been wondering about amp topologies. It's not the obvious solid state vs tube differences that are easily generalized. There are some questions I want to ask of the amp designers and owners who are experienced with various topologies. I think this was discussed to an extent back on Changstar but it's hard to dig up old content. 1. Are there distinctive sound qualities that one can attribute to a certain topology? I'm thinking along the lines of OTL, Transformer coupled, push-pull, etc for tubes; JFETs and opamps for solid state. DNA likes to use a SET transformer coupled design with zero feedback, EC also uses transformers with the exception of the ZD and BW, and ECP likes to experiment with crazy designs. 2. Similarly to question 1 but more specifically, I find that simple circuits and designs (Sonett 2 and FW F3) produce a very resolving but pleasing sound to listen to. What is it about those simple designs that make them sound good?