Hi Guys,
I do not understand his point about lowering the gain of the preamp. By lowering the gain of the preamp, the same gain in the amp, so the same total number of stages in the system. Seems to me that if the preamp stage has more gain, with the same bandwidth, one could eliminate a gainstage in the amplifier and get better fidelity. One would still have the same, or near the same overall voltage gain.
Nice idea.
Otherwise it is a clear, easy to understand explanation. Good job.
Just a thought.