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

I'd agree with Newbee. Tweaks and cables are not likely going to make major changes that I'm guessing you are looking for. A tweak by definition is to make SMALL adjustments to what is already there. If what you are looking for isn't already there you have nothing to "tweak". Sound advice (pun intended) also from Nebee, to experiment with speaker positioning before spending $. Also your room itself may have something to do with it. No expert there, but there are many on this forum who are. I do think room dimensions and treatments have a big impact on the sound of a system. I have no experience with your components other than with both the Kimber wires you have which I found pretty darn neutral, contrary to Sugarbrie's experience of them, but I must admit it's been several years now since listening with Kimber. A friend of mine runs what I think may be the same Rotel CD player and amp through the larger B&W speakers and my impression of that was not at all what you describe. The sound was pretty full-bodied to my ears. Can't recall which B&W he was using, but they were towers with little eyeball tweeters on top. My gut would say look at your speakers and or amplification if room and positions don't pan out. If you have a local dealer you bought your gear from maybe they'd loan you some alternate demo gear with a credit card swipe if they knew you were serious about making a change? Just .02 more cents to thoroughly confuse things!

Newbee above stated "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".
I will have to totally disagree with his statement. I have heard vast differences in cables regarding warmth in the middle/upper bass performance of cables. Example Nordost SPM vs. XLO UNLIMITED cables a huge difference the SPM is very thin and very little warmth the XLO is very full and is extremely warm sounding.

I used to have the same complaints - thin & bright. Keep your hardware for now - you'll NEVER know the full potential of your present setup until you begin experimenting with upgrade AC cords, interconnects, speaker cables, AC line conditioning, tweaks such as shelving, cones, pods, footers. Even your rack has a significant effect on sonic signature.
At one time I was, like you, considering replacing components. That's only a part of the answer, part of the time. I tuned what I have to my liking & I'm so glad that I found out the true potential of my existing equipment. It was there all along - I just had to solve some puzzles to get it there.

Mejames- I can appreciate your experience with the cables you mention, but why would you doubt, or rather HOW could you actually DISAGREE with the statement by Newbee that is qualified with "In my experience". He was drawing from his own experience as you are drawing on yours. Surely you aren't disagreeing that he actually had the experience he says he did. Just a matter of semantics, but I guess it struck me because you actually chose to quote him in your post.

Regarding the $1000 interconnects you do mention. Are you suggesting that Yxlei should invest in these cables given the cost of his other components? It would seem a bit out of proportion to me, but perhaps you are just using it as an example. I've got to say that I've certainly heard one cable sound warmer than another, and a power cord that can bring sonic improvements to a system. But I've never heard any of those improvements be as significant as a change in hardware. Now perhaps I just haven't heard enough cables in the really high-end to know what is possible, but I when I switched from Kimber 4TC speaker cable I went to a pretty expensive and well reviewed set of Synergistic Research Signature 2 cables. Yes, the difference was immediately apparent, and in that case I found the sound stage improved, the sound was a bit warmer to my ears, and the imaging a bit more focused. I was very happy with the change, but the system was not far from where I wanted it to be to start with. Did it impart a whole new voice to my system? I'd have to say it did improve the sound markedly, but I would not have called the difference a major shift in sonic presentation that would make a thin&bright system more rich and full. I would really like to hear cables that made that kind of difference. Perhaps I'm just not discriminating enough, or just haven't heard the right cables yet?

Mejames & Bob, please help me with my understanding of electronics - exactly how would a change in cable produce an (apparent) increase in sound in the lower midrange and upper bass (without a corresponding reduction in the adjacent frequencies)? I always thought that passive devices could not add, only subtract.