ladies,,,,,,,,,Gentlemen

I have a nad 1240 twice modded preamp that has such a lovely graceful soft fuzzy but colorful detailed attack and decay, with a huge bass floor I love.
WITH ZERO LISTENERS FATIGUE
But I think either the new smart meter they just put in is wrecking it, or the caps are going,

cause the bass is getting rubbery at odd times,
and by the way....this "At odd times thing" is a whole new phenomena to me. i have never heard bad caps come and go When i use the marantz 6005 cd player, it takes a good 90 mins to warm, I use the rotel 1072 it warms faster.
power amp is a high end 1 bit analog driven D amp, That from AS to stereophile has raved about tight bass, detects the difference from a mp3 from wav in a heart beat.
I love the house sound of JeffRowland and marantz, soft "Carmel HEAVEN" to my ears.
Rowland prices beyond my Gypsy life style, I am frigging hard put to part with the NAD.
So then as I put other laying around the house pre amps in to make sure and test the rubber bass thing is just the nad
I look out on the net and find this thing ---
THE THING
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So I look in side the thing and see-
INSIDE THE THING
I also note a class AAA stitch job to the rca's
THE RCA STITCH JOB ALL OFC
after a ebay review that says 5000 people adore them, they say this is the same as a 1240 nad after you break it in, except as you can see in photo they have already done a lot i paid to have done to mine like have the head phone circuit removed, trioid trans,,etc.
they have a 2040 model too you can see here below that looks exactly like the 1240 pre they sell (Almost)
https://www.ebay.com/p/NAD-3020-2-Channel-Integrated-Amplifier/110958973?iid=263047252415(do i see user bias heat adjustments on the out puts there to warm the sound ????)
they also say they will just sell you the 1240 nad board.
then I note they are making all kinds of other companys out of patent stuff.
BACK ON SUBJECT Question-
in keeping with cheep and cheerful rules does anyone know of used warm and fuzzy colorful 500.00 pre amps

KEEPING IN MIND a nice bass less. everything sounding one octave higher then it was recorded squeaky clean sound is about the same to me and many of us
as making love to a store window manikin
just pulled from a deep freezer .
Also if this thing above sounds as good as it looks for only $180.00 free shipping, Harry Pearson is gonna be out of a job. I have seen fools spend ten times as much on less.
take care
stay safe
grace ruby
PS you researchers out there, this company shows up in very strange places on the net. good luck