Are manufacturer AC cables good enough?

Maybe not dude!!!!

Not good enough for me. They're functional and that's about it. Any after market power cable I've switched to has been better than the stock. 

If people like their stock, that's great; they're the ones listening to their system --- I'm not. Same with people who make fun of any power upgrades I make --- my system, my ears, my money. Not theirs. 

@allthebits: Nope... that’s not gonna fly. Someone needs to save you. Save your soul. From the evil cable makers. I cannot let this happen. I must do something. I really MUST. I am breaking my keyboard right now... I am so angry. I need to save these poor souls. Time is running out. 😉😂

"Hallowed be thyname...."