"John Curl's Blowtorch preamplifier" 3D

Hello :)

I was trying to follow, for what little i can understand, the following 3D

John Curl's Blowtorch preamplifier part II
posts 37,324
views 3,410,521

I wonder which are the reasons of this exceptional interest
Is a kit of this preamp available ? (this is a joke :eek:)
No seriously, is this unit a masterpiece of audio technology ?
By the way the 3D is almost impossible to follow because not all the comments seem to be pertinent i think.
Thanks a lot and kind regards,
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