My CA-1000 definitely sounds brighter than my CR-1020. They are fairly close in specs, I believe, but handle sources and speakers much differently. I have found:
1) The CA-1000 Integrated works best with CD player and NS-1000M's. Incredible detail at ALL volumes, with enough adjustment to round the sound to suit you. Of course, the better the CDP, the better it sounds.
2) The CR-1020, along with my Dual TT, a CDP, or in FM mode and just about any speaker, comes across warmer and more forgiving. Just a fantastically clean, powerful, 70's sound.
Either way, you just can't go wrong!