@pastorbob is always right :)
I ordered the AE power cord 2P and have been playing it since yesterday. Wow, what a difference! It's like everything opened up a bit further. More details even at whisper low volumes, guitars have more bite, piano has more weight.
However, I will add that the Curios Cable USB chord didn't really improve the sound anyways. I can't hear much of a different between it and the AudioQuest Forest cable I had before.