Robert, what compelling evidence? We are talking about what we hear or do t hear, most of us are not engineers. I’m not asking for proof that someone does t hear something, nor do I believe proof needs to be shown that they do. Why can’t we take each other at their word about what we hear, either way. Why does offense have to be given or taken over the subject. Those who can hear, would like to have a discussion about that, why can’t they without the negativity. If someone I’d asking questions about their McIntosh amp and someone else shows up and starts trashing McIntosh as trash and inferior, is that right? The forum is here to try to learn something, hopefully. Open discussion. Tolerance of other people’s points of view. Neither side of the discussion should be pointing fingers, calling names or demeaning the other. No one should be made to fell like a fool for what they hear, all these things destroy open conversations and the ability to learn anything.