As you have moved on, are there any items you remember fondly...or most fondly?

Creek 5350 SE made in England; sold, hastily, after servicing.  I miss that little integrated. 

Totem Arros.  Wife loved them. I now have extra spaces where I could make them work for a small reading nook.  Such a wonderful speaker.

NAD M22 Amp.  Not what I needed for 2 channel listening (I'm all tube based) but would've worked a trick in my media room or basement bar area. 

I seem to always be balancing these two questions: 

Shouldn't we keep this because you're going to be giving it away for an inexpensive price when you could use it "later"?  (Later is not defined or known). 

versus

Do you really want to keep and maintain an audio/hifi museum?  If you don't use it, sell it!

Sonic Frontiers Power 3 Mono Amps, 220 WPC - Pretty awesome
JM Lab Mini Utopia - My first pair, woah...  Much better than KEF Ref 1s
Adcom GFP-750 Preamp - It was pretty good...
Sonic Frontiers Line 2 - Much better than Adcom...
Pass Labs Aleph 5 - My first Class A room heater; what a heater!!  :)
Pass Labs Aleph 2 - These Class A monos were pretty awesome
KEF Ref 1 Speakers - First foray into nice speakers, ehh, pretty good

I had a Sony ES Home Theater 5.1 receiver that I bought in the late 90's that I really liked,  even for 2 channels music.   I think the model was DA777ES.   The mid range of this amp was so sweet.   

After owning it for about 12 years, the entire digital circuit stopped working.  Only analog inputs still worked.   I decided not to fix it and threw it away in garbage.   I kind of regret it now after all these years.

Sony ES line used to be very good.   I don't know what happened to them.   Seems like they have stopped investing in the ES brand.  That's a shame.

In my first system, in 1973, my favorite piece and still is to this day, the Marantz 2270 receiver.  I sold it to a friend to pursue a path for a much greater system.  I wish that I still had that receiver.  It was gem.

My all time greatest and most fond memories of past components was my stack of Accuphase components.  A T-100 tuner, C-200 preamp, and two of the P-300 power amps.  Active dividing network for large Infinity RS-2.5 speakers and a Micro Seiki DDX-1000 turntable with Micro Seiki MA-505 tonearm and Ortofon MC-20 cartridge going through a Luxman SUT.  For the age of just 25 that was one hell of a system.  Everyone wanted to party at my house.  But really, those Accuphase components were the "special" products for me.  I still remember that sound signature, very fondly. 

Am v surprised that no one has mentioned Quad 57s.
Maybe because everyone still has them.
I joyfully lived with mine for ten years. Only sold them to get bass, treble and dynamics. The cosmetic was also an issue. But their glorious midrange was addictive.