Synergistic Red Fuse ...

"I guess the next place would be the source, and pull the furutechs, because I'm sure the blacks would mop the floor with them and would be a better sonic upgrade from going from red to black in the preamp... "

I replaced Furutechs in my CDP and pre-amp with the Blacks.  The Furutechs were indeed an improvement over the stock fuses and served me well for a few years.  But the Blacks are in another league. 

Gbmcleod, I read your post,  one thing stood out, I could not figure out if you preferred the furutech gtx-rhodium outlet's better than the rest of the compilation of wpo’s-wall power  outlet's? 

Almarg,  if you are around? , this question is directed to you,  I studied the offering's of values of the sr-black's fuses for my krell 700cx amplifier that takes 1- amp fast blow fuses × four of them,     I really do not want to use the 1-amp value for reasons of possible blowing  $520.00 up in my face,  the next value is 1.6 , of course my fuse requirement is the big fuses, not the smaller one's,  what is your assessment of useing the 1.6 value in place of the 1-amp value? 

I had written last week that despite the many positive posts on this thread regarding the Black fuses, the number would continue to grow. This has happily been the case unsurprisingly. To the point of being redundant these fuses represent one of the great  tweak opportunities available.  There are very few upgrades that will yield this level of sound quality improvement for so little cost. I'm just very glad that more people are discovering these fantastic products. Keep in mind that the better the quality of an audio system, the more impactful their effect in my opinioon. It is wonderful to realize that  you can noticeably improve your system's performance without having to spend thousands of dollars. 
Charles, 

Here's my data point, which is not at all meant to be a downer or to question the premise of upgraded fuses.   It's a silly and delightful hobby that we cherish here, and this thread is a great example of the power of the web to bring us audio nerds together. That said, this is the deepest down a rabbit hole I've ever felt!  Definitely feel like I had the best sound in my system's life before the Blacks, and now the magic's gone.  (And I didn't note the direction of the stock fuses before I pulled them out, should I want to go back!)  

At ~100 hours on the Blacks I got home and sat down for a listen last night.  What I heard was definitely short of the musical engagement and detail retrieval I enjoyed with stock fuses on my PWDII.  I did hear a slightly lower noise floor, but the highs in particular were rolled off.  Cymbals, for example, just weren't as there as before.  Imaging was flatter.  My mind wandered.

Great to learn that Audiolover notes big difference with direction.  Popping open PWD is trouble enough that I'll probably wait several more days of burn in before I flip them.