The Bernstein/NYPO set WAS issued in a remastered version, and all the
reviews I saw indicated that the improvement was on the order of the
improvement in the Mahler cycle between the warlier versions and the
Carnegie Hall set. Here are John Fowler's comments in his Amazon review
of the Mahler now available:
"The CBS Bernstein/NYPO Mahler cycle on CD,
Four different remasterings:
-- 1) 1980s: Full-price CBS CDs = individual CDs, not in a box.
-- 2) 1992: "Royal Edition" = individual CDs, not in a box.
I don't know who did the remastering.
-- 3) 2001: "Bernstein Century Edition" = individual CDs, also released
in a box: Mahler: The Complete Symphonies ~ Bernstein ,
remastering engineers: Charles Harbutt, Ellen Fitton, Miguel Kertsman,
maybe others.
-- 4a) 2009: "Carnegie Hall Presents" - Mahler: Complete Symphonies
(Carnegie Hall Presents) ,
remastered by Andreas K. Meyer
-- 4b) 2012: The box under discussion,
this is an "original jacket" reissue of the 2009 remastering by Andreas
K. Meyer."
Unfortunately, Mr. Fowler did not review the remastered Sibelius set,
but other comments lead one to believe that the improvement is similar.
More unfortunately, this set was available for about five minutes, and
now sells for a small fortune (Amazon shows one used copy for $263.42.
Sony, are you listening?)
Bob Harper