According to Raul there is only one right way to do anything in this hobby. We are all either too stupid, not intelligent, have tin ears, not enough common sense, etc, to get how correct Raul. Ok, I think I have that part memorized now.
But forget this "bench racing" type argument here in the forums. How does this stuff sound?
Some of us have heard what Raul's implementation sounds like in side-by-side comparison to some of his competitor's products. This is where Raul's on paper arguments have trouble in the real world. They just don't live up to the hype Raul is constantly spreading. Yes, his work sounds pretty good. There are some good and some not so good sounds coming from Raul's implementation of his ideas. Some sounds coming from Raul's Essential could be cleaned up and made better with some cable swaps.
Umm, that pretty much sums up every phonostage/preamp combination around. So it doesn't appear that Raul's work has started any audio revolution. The Essential is just another product out there for us to choose from.
The concept Raul cannot get, and probably never will, through his pointy little head is that all of the theory and math doesn't mean crap when you hook things up and turn it on. It is just talk points. How does it sound?!? That is all that matters in the end.
As Peter, Teres, and others have pointed out, each additional component that is added to implement that perfect curve is adding coloration to the sound, or it is squashing something else. Either dynamics or detail. Anyone who has played around with crossovers to any extent knows this very well. Sometimes you can get a very pretty curve from the simulations and even in actual implementation but it still doesn't sound right.
Raul can never allow this kind of thinking to go unchallenged because it flies in the face of almost every argument he makes in his marketing campaign.