@ tantejuut
With the jumble of cables coming from my AC conditioner and CD player to DAC to integrated amp, I find the 90 degree rule impossible to achieve. But as stated in my opening question, my system sounds great notwithstanding the complex interchange of cables. As far as my original question is concerned, I will certainly take the looming idea into consideration in my 2nd room setup but will not be ruled by it. Thanks to all for your input.