phono/preamp analog front end

Nice explanation by Ralph on this widely misunderstood phenomenon. One minor quibble:

atmasphere

Its like Ohm’s Law in that it can’t be broken (unlike a speed limit); literally if you were able to get around it you would be creating Free Energy and with it a new branch of physics :) Seriously though, that’s the truth.

While Ohm’s law remains valid for what most of us are likely to do, there are exceptions in what’s known as "non-Ohmic circuits." Examples of these include the common incandescent lightbulb and vacuum tubes. It’s all part of what makes electronics so tricky.

Some details about the principle are here, but none of it invalidates Ralph’s explanation about phono cartridge loading.