"Fed Up Lurker" wrote

NONOS is "non-oversampling", which isn't a truly full or accurate acronym.

True. The letters "non" should not be capitalised as they are not the
initial letters of words.

It is the disabling/by-passing the digital filter pre conversion (as
opposed
to the post conversion analog filter ).
There is plenty available about this simple mod online.
The controversy that surrounds this DIY* mod is that the traditionally
accepted to be required brickwall filtering is defeated. This of course
results in quantization is not pushed (oversampled, 2x, 4x, 8x etc) out
of the audio band. To an engineer as yourself that would be alarming
and indeed it measures painfully, but the result can be magical.


Really?, it measures crap but sounds "magical"? This is the same sort of
nonsense that we get from the vinyl brigade. Early CD players were
non-oversampling, oversampling was introduced later because it sounded
better. Had those early CD players sounded "magical", oversampling, and
later single-bit converters, would never had taken hold.

David.