Audiokinesis is exactly right. But that's also a no-brainer and hopefully goes without saying because system synergy is involved in every other aspect of audio as well i.e. room acoustics, ics, pre-amps, amps, cdps, tts, speakers, line-conditioners, etc..
But there still needs to be a starting point in which to begin one's quest in the attempt to obtain a product of a certain quality. If for no other reason than to hopefully save much time and money while also aquiring the best possible sonics.
-IMO