I ordered MUSES01 but replaced it with MUSES02 from my Blue version. Now, I have two different OpAmps to play with. After ABing it, I can say that the sound seem fuller and cleaner on LE. Bass got more details while treble got slightly cleaner. Both Blue and LE still have the same power rating. 9V and 12V are referred to the voltage that supplied the OpAmp.
Edited by mtthefirst - 4/15/13 at 9:02pm