Do I need upgraded power cables?

I felt my Panamax degraded sound quality, as do many power conditioners./surge protectors...I do like the results of my Cerious power cords (all 3 levels) in a wide range of systems...yes much debate, argument, and endless threads on this topic, many of which end up quite nasty...

A good thing about power cords is that they seem to hold value very well ... buy a used cord from a manufacturer that doesn't change models often... my first was a SR Master Coupler .. sold it 8 years later for same price I paid used...also easy to borrow and try...trust yourself, as I'm sure you would prefer to not spend money on a useless item...unfortunately you might find you prefer to sound of an expensive one !!!

Yes, people often don’t hear a difference when they "know" before that there cannot be any difference...Pass Labs includes very good quality cords, many companies do not...a nice bonus too is that used power cords are avilable at good prices and hold value a long time...I ended up with after market cords after extensive A-B testing with a friend (all cords were loaners, with free, simple return)...neither of us knew anything about power cords at that time...