System synergies: Chaotic or predictable?


When speaking of system "synergies", do you consider these to be chaotic? or are they a predictable sum of the character of the components?  I'm surprised at people who think they can predict the sound of a system from their perceptions of the components (derived, in turn, from other system combinations), and even more surprised and suspicious of the 'tone control' approach to purchasing cables and amplifiers suggested by another forum member (who does happen to be a dealer). 

I think these two views are contradictory. If we think that components have 'magical' synergies beyond our ability to measure, then it seems unlikely that we also can predict how combinations of components will sound.

ahofer
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This thread started with the topic of system synergy. I have experienced being able to match components based on how I thought they would sound together. So far my guesses have been 75% successful. I had a NAD preamp and a Rotel power amp combination that sounded terrific with the Mission M772's that were my 2 channel mains, at the time. I decided to upgrade (or move laterally) to some Paradigm Titan Monitor v.6's. I knew the Rotel to be a bit harsh in the upper frequencies, but the Paradigms made it painful. I sold the electronics and found an Arcam FMJ A19 being sold for $250 below retail, NIB. Night and day better. The balanced tonality of the amp with the Titans was like Mid-FI magic. Now I have upgraded my speakers to some Revel M-16's and the magical synergy is once again, gone. The real problem is the much lower efficiency of the Revels vs the Paradigms. They sound much better, but 50 WPC @ 8 ohms is not enough power to make them really sing. Wish I still had the Rotel power amp I sold. I'm looking for another one. RA 980 BX, or 981, 990, etc.
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