Am i missing something without a power conditioner?


I need your advice on power conditioners. I know there is alot talked about with power conditioners. But let me explain my situation and what i have. First and foremost i upgraded all my stock power cords. I am using and have a Krell FPB 600 amp with a Shunyata Research Sigma HC power cord. I am using and have an Audio Research Ref 6 preamp with a Shunyata King Cobra Helix CX power cord. And have a Rega ISIS cd player with a Shunyata Sigma digital power cord. I have 1 dedicated 20 amp line with a 4 plug 20 amp wall outlet that my amp and preamp plug into. My question is with these high quality power cords do i still need a power conditioner? 
128x128Ag insider logo xs@2xtattooedtrackman
lak.... Il tell you the Gods honest truth. I was really listening to my system to hear if i really need a conditioner. The sound seems so clean and so pure that i could not imagine how cleaner my system could actually sound. I really think it would be a very big waste of money as of now. I really can not see my system sounding any better and more cleaner than now even with the best conditioner there is. 
Btw ...I dont even have a dedicated 15a circuit for my cd player and Krell B&W Bass Alignment filters. I have 1 Dedicated 20a circuit with a 4 outlets that i plug my Krell FPB 600 and my ARC Ref 6 preamp. 
Maybe its due to my Shunyata Sigmas and King Cobra cx power cords? I dont know.... But i really believe i will have no cleaner sound than i have now to actually hear a difference. 
Maybe i will put a dedicate 15a circuit for my cd player just for the hell of it. But as of right now i cant see me spending about 4-5 grand in used Shunyata conditioners not including about 2 grand in power cords. Seriously my system sounds crystal clear. 
does the Elgar give you any protection for surge, like a close lightning strike?
Yes.