Choke power supply- part 2

@cindyment  I hope you understand a linear power supply is to create a DC voltage and current out of a 60 hz AC line. One would not want it to pass high frequencies. The OP is posting about a choke input PS, which is considered to be a step above an ordinary supply using chokes and caps after rectification.

Whether you put the choke on the input or the output the effect is the same. A transformer reflects the impedance from one side to the other based on the turns ratio. Even if the inductor is on the front AC side, it still effectively forms an LC with the capacitor. Note Schiit's Description. It works, but is it is a good engineering idea? Questionable.  The "custom nickel core" sounds all impressive, but that is just common core material and custom inductor is not remotely difficult.

And pure LC—inductor-capacitor filtering from the highest to the lowest band, including 4 custom 80% nickel-core inductors as big as 1.5 Henries. 

Well apparently Schiit figured out a way to make it a "good engineering idea" without checking with cindyment.  Mike Moffat and Jason Stoddard have been designing/engineering amplifiers and dacs since the '90's, so they might know a thing or two about it.

And Pass amps use choke filters in their supplies too, but the question was why they are not more common, not whether they "can" work. I don’t need Mike Moffat and Jason Stoddard’s blessing for my comment and I expect across a table with engineers, their answer would not be much different from mine.

The fact it "impresses" you means it already "works", even if it does not make sense. It sounds really cool from a marketing standpoint. Choke regulation used to be common in linear power supplies.

I am not yet impressed as I haven't heard the amp yet, its not in production.  I am curious about the amp(as I said above), as I am curious as to why some try to find fault with something they haven't heard yet. If Pass Labs is doing it then its not like Schiit Audio is stepping out on a limb.   Have you heard any of their amps or other products?

Schiit Audio does almost no marketing, its part of their business model and partly why their products don't have stratosphere mark ups.