Do preamps enhance sound quality?

If I was a you-tuber, which I'm not, I could sit with the £25K APx525 audio analyser behind me (the one with the BW52 and AG52 where "power amp designers have the best analyser in the world for testing overshoot, undershoot, and ringing in the device under test" according to AP).

I could have my laptop running (the old V3.4) software, and show you all the BS you'll see on ARSE.

But no. I'd show you reality, because if you'd used audio analysers since 34 years ago (including Lindos and Neutrik), your mindset isn't set up to cheat.

I could set the APx525 into loopback and show you how wonderful a piece of wire is!

Then, if I had a selection of those so called wonder preamps, I could show you how every single one is inferior to a piece of wire.

If I had the time, money, and inclination, I could clone what some of the "great designers" (in their own opinion) say is perfect, and show the high frequency triangular waveforms which show the poor slew rates, which they equate to the best hi-fi sound.

Under the video you would see lots of dislikes, and in the comments you would see lots of trolling. The reason being that all those wannabes who are earning the big money out of YOU, would want the YouTube search engine to relegate my video so it wouldn't come up in search results...

...very similar to the way this entire website doesn't show up on page 1, 2, 3, 4 etc, in organic search, unless you use my name as your search term.

The truth died many years ago. The rot started in the 1970's, and if you don't believe me, then search for Jim Lesurf of Armstrong in your favourite search engine.

 But there is an inherent technical electric Output value that distort in CD and offering a Menu to suit music taste is recognition of that CD's  deficient sound. I attend north and south London musical venues to refresh my experience of true music and convince that Home music replay is distortion BUT feel to be wise enough to seek Genera/GOld V for the RIAA equalisation I enjoy with my Thorens turntable as other with different would sound very different and I chose Proprius and 70's to replay my acoustic base Music library of CD's because other sound very different and Not to taste .....I would accept the change of tone if my Music Psychic perception or actual experience from my ears to my brain provide the emotional experience i seek in Music.  

CD's has an Inherent difficulty in it's Electric output value and it's Tone. I will accept any "wire" that rectify this to a moire natural acoustic in better musicality. 

Phase and loudness go together. It seems like very few know this. They should know it if they understood speaker basics. At high frequencies if you are off-axis the volume is lower, yes?

So what is the phase? If the power is -3dB, you should be off-axis by 45 degrees.

Now, here I'm talking about a natural situation. Some speaker manufacturers may manipulate things so the above doesn't happen.

But, basically the 45 degree thing produces a halving of power, and that's how stereo images work, and lots of things in the recording studio work that way. One example being the constant power pan circuit.

I'm sure in nature too, if your head is turned 45 degrees, the sound that was head on or side on will be + or - 3dB to what it was.

So, if the digital cut frequency that turns over at -3dB is not 45 degrees out of phase, then it isn't natural.

And most DAC (or CD) outputs cut steeper such that -3dB is far higher than 45 degrees.

If we dare to make a DAC that doesn't start to cut before 20kHz, and then its rate is gradual enough that -3dB is going to be 45 degrees or very close to it, then it might sort out that unnatural digital sound?

Well, the only way to do that is to use the highest oversampling possible, to shove the sampling frequency much higher than it usually would be.

And then once we're well past the human hearing range, we can then cut hard, such that the phase displacement doesn't make the -3dB point steeper than 45 degrees.

So, that's how the Majestic and Bitzie analogue filters work, and I think that most users have noticed how natural they sound.