How many of us are truly diversified

Regardless of the wording of the question, I interpreted that you are curious whether those of us owning multiple set-ups enjoy one over the other and whether that may have anything to do with the class of amplifier, value of the system, or any other pertinent differences.

The reference to a NAD 3020 by the pool caught my attention since I just recently decommissioned a NAD 2150 amplifier in my pool/back porch/garage system due to intermittent buzzing. That thing, along with the companion 3140 integrated (big brother to the 3020), have been in constant service since I purchased them in 1981 - 40 years ago! Amazingly they both still work and could possibly be brought back to full service with cap upgrades and some cleaning. I am considering a Class D amp in that outdoor system for simplicity (maybe a D Sonic or something similar) but for now I have replaced the NAD amp with a pair of Cary CAD-500MBs I had here collecting dust - overkill for sure but they rock the back yard and sound great.

To your question, all three of my systems use Class AB amps and I certainly enjoy my main system (posted here), which sounds the best of the three by far. However, I have had even more enjoyment and better memories listening on the back porch or by the pool, either because of the company and/or the atmosphere. Over here, the music, the people, and the setting, not the equipment, have the greatest impact on my enjoyment.

@jjss49 -

     "meh conveys many thousands of words among reasonably well educated jewish americans..."

                                  Kinda like a good old Italian, "fuggedaboutit!" ?

                      https://www.amazon.com/Fuggedaboutit-Italian-Swear-Word-Coloring/dp/1532972164

                      https://www.amazon.com/Im-Not-Yelling-Italian-Coloring/dp/1727238125/ref=pd_lpo_14_img_1/139-0537337...

                                  SO MUCH more than meets the untrained ear!

@rodman99999

SO MUCH more than meets the untrained ear!

just like listening to the difference between $2000 rare earth metal fuses 🤣🤣🤣🤣

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i am fortunate to have 4 systems across 2 homes... 

relating to 'variety' in system building...

-- know the room, its needs, how gear will be set up for listening (good listening triangle? symmetry?)
-- what is your source if there is a clear preference for one (or more)
-- what are your cosmetic, situational, ’waf’ constraints
-- build it from the speakers back to source, being true to your listening desires (’live’ exciting sound, background ’mellowing’ music while multi-tasking, etc etc)

technology (class of amplifier, topology of dac, mm/mc cart, planar vs dynamic speakers) doesn’t make the cut in this critical thought process unless it suits one of the above criteria

My wife understands my love for music and therefore puts up with my stereo in the LR. She also tolerates my use of one bedroom to house my drums  (8 piece) & PA system 1200 class A/B crown Amp with Peavey 20 channel board. I also have 4K vinyl albums in there. Then there is the office which I used 25 yrs for business which now houses my Harmon Kardon HK730 receiver (needs rebuilding along with Infinity RS5000 which is rarely used now. This is along with my computer system, books, etc. i listened to Sass Jordan this morning on the computer system while perusing my email. Then there's her boom box in the BR which sounds good for what it is. She likes it because it doesn't take up much room. So, I have taken 3 rooms of the house just to house my music stuff. So, my wife really puts up with a lot for my music. Yes, she listens to the main rig also and enjoys it in her own way. And, I enjoy every one of them when I need some music, though the LR system is the top dog. I'd love to build onto my office to make it a better size so I can give my wife her pretty LR. Lumbar prices now are ridiculous. Should have done it 10 yrs ago when I was 60. Oh well

@artemus_5 That is so cool that your wife tolerates you love of music.
25 years here and my wife is the same. I play trumpet and guitar and all 3 of my kids growing up were drummers/percussionist and my oldest was in the Oklahoma State University Jazz Band,  and Percussion Ensemble, Still have a drum set here and a marimba.

Yep building costs are nuts now we are working on remodeling a kitchen and I think I would be better off selling and moving to South Dakota.