I have also been around audio all my life. I have owned and still do own many different systems , Audio research, krelll , Mark levinsons ,and I have several Mac amps and I love them . I think the reason why they get a lot of resentment from some so called audiophiles is because they don't cater to the snake oil nut jobs , and they are still successful . These so called audiophiles complained about their tone controls, auto transformers, speaker terminals , but Mac disregarded their nonsense and still is a formidable company . While I still do prefer my tube Audio research amps , i will never get rid of my reliable , fantastic sounding Mac amps