hey guys why these amp-speaker combo's are seen mostly/loudly with distributer's/dealers..... (1)yamaha amp-wharfedale/mission speakers.... (2)harman kordon amp-JBL speakers.... (3)denon amp-jamo speakers... (4)marantz amp-mordaunt speakers and the list goes on............what exactly is the message does this give to the customers, are these only the best combo's ........or the company "A" say use our amp and use company "B's" speakers, i mean does various companies promote these combo's of its just the distributer's/dealers propagation stategies