Comment by BubTheBuilder

For an example of a really horrible audio "upgrade", check out the Ninja Gaiden Trilogy (remake) on the SNES where they replaced the well-crafted NES instruments with SNES samples just triggered for the same notes and beats. Theoretically could have sounded amazing but is like nails on a chalkboard. Not apples to apples comparison with these SNES->SNES restorations of course.