Power cord upgrade

I had AQ Tornado on my Aurender N200 and didn’t like it - too dull, narrow stage, mushy. Using Nordost Heimdall 2 now and also tried Frey 2. Both are better to my ears and in my system than the AQ. 
I would go with Transparent or Nordost especially if you already have the Hurricane on the amp unless you like soft and dark sound. 

Try a WireWorld Silver Electra on your streamer, they are well liked for that purpose.

I just received a Puritan PSM156 last week and have been breaking it in with the Classic+ cord that came with it. I know the Puritans take about two weeks to break in, but after five days of painful listening with terrible, etched highs, I had to swap out the cord for 20A Shunyata I had laying around.  This quickly resolved that problem though it will not be my final cord for that unit. I suspect that the Classic cords are not shielded and that was the issue. So, yes, I would agree that the cord may be holding you back. I was planning on getting their ultimate cord, but now I am a little concerned that I might have the same experience. 

When I had PSM 156 I swapped connectors on classic cord with Furutech rhodium plated FI-28 and FI-32. Made a really nice improvement.