Just picked up the 555ES and wow does it blow away my old nc650 combo dvd/sacd player! I was very unhappy with the sacd sound of the nc650. In 2 ch mode, the bass was nill, in multi it was a little better but still not right. The 555 sounds awesome in 2ch and multi. I'm wondering if there might be something wrong with my 650 or is it just that bad for sacd? Anyone else have experience with the nc650?