What is wrong with my system?

We had issues with a new preamp, for quite a while,
   Switched from one preamp to a much more expensive one with a nice power supply,.
  We lost our deep bass, it seemed so average, and plain, after a while, few months, she came around, warmed up, moved speakers, added pillows behind the speakers,
   Eventually, everything came into laser focus to my ears. 
   I still use old late 80’s early 90’s audioquest cables.
only add ons were the shielded Belden from preamp to amp, and that helped a lot.

 Lots of factors , try them all, and let your ears make the decision.

  All this has been mentioned above.

I remember some 25 years ago I had a Bryston pre/power - ATC 35 combo and complained about the lack of bass. Which was ridiculous really, since on paper that combo was able to produce a thunderous bass ( just like the OP setup). I even went to the dealer, he quickly put together the same amp and speakers and it produced a monstrous bass. I felt so stupid. But in my room subjectively there was no proper bass.

I measured the freq. response, and the reason was a strong room mode around 120 Hz at the listening position even at a moderate level, which masked the deeper bass.

I couldn’t move the speakers around much, so added a TacT Room Correction box and flattened that mode. Immediately I got a flat, deep, powerful bass and as a bonus - a much more natural midrange.

You may have something similar. Start with moving the speakers a bit and walking around the room while listening to the bass. Is the upper/mid bass changing dramatically? Can you find a listening position where the deeper bass goes low and you can feel it properly?

If that’s the case, you may need some extensive room treatment, which is a lot of work, or some digital eq like Lyngdorf Room Perfect which is not cheap, or a new speakers/ amp combo that will behave differently in that region. Probably some good 2-way standmounts.

When I was starting, I had that Idea of a big speaker that will give me a big bass. The reality proved to be a bit more complicated. The subjectively flattest and deepest bass in my room, not using digital room correction, came from a relatively compact quarter-pipe standmound.

Your wall sockets are not properly grounded . Need a electrician

First of all, when a person says "musical", what sound is actually musical? Does the "musical" mean that any audio system is making sound very mush like actual concert sound?
Or, there is more bass than the original music, so the over-boosted bass simply makes your ears pleasing? And, what does the "analytical" mean?
Please, do not say "musical" or "analytical" before you attend real concerts, and compare the feeling of the concerts and sound from your audio. My system does not have a preamp. But mine produces piano music that is very much like piano concert I attended.

^^^ +1

Chesky Records' tag: "Our philosophy is simple: to create the illusion of live musicians in a real three-dimensional space."

Same for the HiFi. It must be effortless playing Queen, Chopin or Toccata & Fugue in D-Mnor