I too tried the WireWorld C7 power cord, and it really shouldn't make a difference, but it seems to to me; it seems that the overall sound is more dynamic and better imaging, but since it takes about 2 minutes to change over between the cords and power up the Node 2 again, there's no way to do a direct A-to-B comparison. I picked this one because I'm not an AudioQuest fan and they want $90-$120 for theirs depending on where you shop. Pangea might have one for $50, I thought. I check my cords with a voltage tester to see if it detects voltage, and with this cord it does - my Pangea cords, it does not. The WW one is easier to work with flexibility-wise, and the connector seems more secure in the Node's IEC connector, where my thick Pangeas do not. It comes down to - if you makes you happy and you can afford it, fine, but I wouldn't expect any magical properties and if you're not happy with any of your equipment, I'd spend the money there first.