i would like someone to explain how one can perceive warmth and detail from a stereo system or component.
I'll take a stab at that. My guess is that most are using the word "warmth" as the common metaphor frequently used here and elsewhere to describe a certain coloration of the upper bass and lower midrange, just as you've surmised. The 'detail' may be coming through elsewhere throughout the range, while the region that primarily defines the descriptor is being slightly softened, colored or distorted (however you want to look at it). As in another thread I'd point out that we are all just struggling to put words to describe something each of us perceives rather uniquely and individually. They are hardly adequate in most cases, but I'd say the general consensus in responses here reflect commonly held observations in many cases. Certainly I can say they do in the case the ones I've heard myself; Pass Aleph, Odyssey, Plinius, McCormack. Now please just don't start talking about "Accuracy" or I'll blow a fuse!
Marco