To be clear, the apodising filter is a different corner frequency and function (in the mathematical sense) to M's ordinary anti-aliasing filter. It isn't a new filter in its own right.
EDIT: Hence the difference in sound, they both do the same job in different ways. The old filter goes higher and flatter than the new one, possibly has flatter group delay than the new one but adds unnatural pre-echo where the new one removes it from the original recording.

Last edited by Mudge; 2012-10-18 06:35.
Mark
G68, baby Genelecs, Humax Foxsat, Oppo+Vanity93, Toshiba HD-A35, Pioneer CLD-925 + Meridian 519, various other random bits and bobs
Got a black G08.2 you want to sell?