I agree with topoxforddoc about the battery. I have compared the battery and 3 different wall-powered supplies on my Galibier. For my money, the battery makes a huge improvement.
I have also heard the same battery vs. wall-powered supply comparison on a Platine Verdier at a friend's house and I heard the same types of differences as with my Galibier.
Not all persons will agree, however. My friend with the PV prefers the stock wall-powered supply over the battery. The AC supply is faster, tighter, and a bit more extended in the highs and lows. What I hear with the battery is more detail, more subtleties, more dynamic contrasts, and a richer, warmer tonal balance that suits my tastes to a T.
Dave
I have also heard the same battery vs. wall-powered supply comparison on a Platine Verdier at a friend's house and I heard the same types of differences as with my Galibier.
Not all persons will agree, however. My friend with the PV prefers the stock wall-powered supply over the battery. The AC supply is faster, tighter, and a bit more extended in the highs and lows. What I hear with the battery is more detail, more subtleties, more dynamic contrasts, and a richer, warmer tonal balance that suits my tastes to a T.
Dave