Curious to know ppls experiences, the pros and cons, and preferences between these 3 types of tube amps. Huge generalizations with tons of exceptions: SET OPT amps: Said to have a gorgeous and clean midrange but sometimes doesn't have the best bass or treble extension, good micro detail, more open and spacious. Push Pull: Powerful & more authoritative bass, easier to pair, music sounds less separated, more engaging, less micro dynamics, less hum and audible distortions from the power supply, less of a pure signal OTL: More of a pure design that side-steps barriers that transformers introduce but has pairing limitations. Best bass and treble extension. Best with higher impedances.