Why my system has detail but no body & warm vocal?

My old system was thin and bright. I changed my speaker cables from Kimber 4tc (which has NO bass by the way) to XLO Pro 12. Warmth, and body came back to my system in a big way, with much better soundstaging and imaging to boot!
dudeaudio

Speakers and their placement. Try lowering them and moving them closer to the wall behind them. Use chairs or boxes of books or something, just to experiment with height. If you have a coffee table between you and the speakers, or anything that can reflect soundwaves before they get to you, remove it. If this makes enough of a difference and you like the resulting sound, get or make some inexpensive wooden stands at the right height. If not, shop for different speakers.

Rotel and 600 Series B&W's usually go well together, so I would try different cables...

Consider Van Den Hul D102-MK3 or Nordost Blue Heaven interconnects and some Audioquest speaker cables..

To my ears your post's title describes Kimber in general....

I have to agree with these posts, after looking at your equipment I think itprobably has a bright but detailed sound. I had a system and was very much the same, I switched the cables from AQ to XLO and tara. And that made helped but of course I don't not beleive any cable can cure big problems. I had to change my source. You can try cables, they help but there not a miricle cure. Save those dollar your going to use on over priced cables and get a different Source or Amp, that matches your system and likeness better.

FWIW, I wouldn't spend a nickle on any cable, interconnect, or other tweek until I had exhausted all of the possibilities regarding speaker positioning, including speaker highth, toe in, distance from wall, etc. I would also experiment with the listening position as well. If that doesn't do it, you can decide whether you need speakers with a fuller lower mid range, or a warmer amp, or both, or whether the problem is resolved to the point where cables will make a difference. In my experience, cables may make a big difference in the highs (you can roll them off, or brighten them up)but they won't give you any warmth in the mid/upper bass area where vocals predominate, unless you seriously roll off the high end, and it doesn't sound like you'd want to do that.