I always worry about myself becoming a cork-sniffer when I can hear a difference in these things! But I swear the Sozos I use in my amps sound better than orange drops or even Mallory 150s. The Sozos sound full and less brittle than ODs and brighter than Mallorys. Extremely subtle differences, and I couldn't tell you what the caps in an amp were just by listening, but I'm certain I can hear an improvement when I switch to Sozos. But then we are talking about hundreds of volts in these things, not 9V or less.