What does 'Fast mean?

Chopping off the overhang can be unnatural reproduction of music. A balance is needed for accuracy - the world is not all black and white. Arthur

I think the point here is harmonic reproduction - not the speed of light or the switching speed of devices.

Reproducing harmonics means reproducing music. The question is whether the harmonics we hear are from the media or the electronics. The electronics can add harmonics (distortion) or remove them (low bandwidth and/or stability).

Problem is that there is no reference point - hence all the debates found in audio forums, including this one.

Arthur