Do I need upgraded power cables?

Hello, and I hope you are well. You have a nice system. I would go to Amazon and purchase power cables (brand is Preffair and visit their site) for your amp and subwoofers. I am not affiliated with this power cord company or Amazon. I did build power cords, as it is not difficult, but time consuming. After the price of connectors, good cable by the foot/meter, and the dressing.....you are way beyond these Amazon prices. Your factory power cables are "bottlenecks" to the full capability of the components. 10 gauge cords, will make a huge upgrade. A nice "intro" to the power cord thing. You can select the plug material coating and the specific plug housing you want. I use the Alloy shells with the Rhodium plugs, which sound a bit more extended in the treble compared to the copper plugs, ime. I talked about these before here, and a few folks contacted me thanking me. Someone did not like them, as they were using much more expensive brands. Hope you try, at least one, for your amp. My best, MrD.

@mrdecibel ​Thanks for the tip regarding the Preffair Power Cords. I will probably give them a try. I've read about the possible differences between gold-plated and rhodium. Do you have any comment on the Preffair Carbon Fiber cable? Thanks​​​​​​

I admit it is awfully impressive for any company to make a power cable that looks this good for under $80, but use some common sense. 

Just the knock-off connectors are look alike Furutech FI-50 connectors which retail for several hundred dollars- each. It is not possible this cable uses any sort of quality, I guarantee they don’t use red copper, it is not 99.998 % pure, and the carbon fibre is plastic. The website pictures aren’t even real pictures. Pure lies and deception. 

Preffair = Chinese knock off. I don’t know why anyone would support this. 

Why Preffair? Under $40. with free shipping...that is why......and I have built power cables costing more in parts, and my time, that do not do anything better than these. Never have I indicated that they are "real", but at the price, they are FAR and AWAY better, in SQ, than the standard cables that might come with the components. Always, a return is allowed as well...nothing to lose. 

@bzawa Best value for rigs that aren't crazy expensive, Puritan Audio PSM156. It comes with a very good power cable or can be upgraded to one with a crazy expensive power cable. The original is still very good for a supplied cable.