I just skimmed the first page and above of this thread.
What a scream....
I like the cut & paste above - a nice "back to front" of Nyquist without discussion of filter behaviour; no mention of (analog) harmonics nor compression...
Then again, it's only a mono system...
To think that once upon a time they used to sell OFC because it didn't have domains (crystals) that would distort the sound going to the speakers! OMG!
Some might remember those "rubber bands" that "minimised CD wow & flutter" were sold. FMD!
That's why I love the adoption of MPEG-1 Layer-3 - it blows the above into insignificance.
Meanwhile our ridiculously powered amps reproduce the above at way less than 1% distortion.
(By "ridiculously powered" I mean the 12-volts to the amps, NOT the measly kilo-Watts of audio output.)
Oh dear, another rant. And maybe a bit tech.
Maybe I too should sell 5c diodes for $40 to overcome the need for $500 converters! I can't convince people to stop damaging their engines, but preventing apparent damage to batteries is a winner! (Or is that virtual damage?)
YES - I just found another cash-in-on-the-gullible or "pay for non-DIY" product. And yes - it's for those Australians!