Synergistic Red Fuse ...

Bill,
That good to know, it seems you just needed the required burn-in hours. If you haven't done so yet, be sure to reverse the fuse direction. It may not result in a "dramatic" (the degree of effect appears to vary with component/system) difference but one direction will be preferable to the other. I look forward to your upcoming comparison.
Charles,

Charles, I reversed the direction last week and the difference was quite obvious.  I had the correct direction from the beginning.  I am eager to do the A/B tonight, and based on the results, will make a decision on buying additional fuses.

I finally received my black SR fuses today. I replaced the stock fuse in my DAC to the black and the difference was eye opening as most people here already know. Pace and rhythm to another level, organic mids increased, relaxation and less harshness a big plus. I would say at least 40 to 50% improvement. I then replaced the red SR fuse in my preamp to the black and could not believe how much better the black is to a well broken in red fuse. The combo of preamp and dac together was something else. I was so involved in the music. I am not getting any harshness or brightness that other people are observing with the early break in stages of the black fuses. My next change will be the fuses in my amplifiers. The direction on the black fuse in my preamp was not the same as the direction of the red fuse. I am wondering if anyone else had this happen. I am wondering if SR applies their treatment to any direction and the lettering on the fuse really does not serve as a direction at all. Thanks Papa for this thread you have brought pleasure to my system that I can't thank you enough. It would be nice to meet you, but I don't think you are going to Axpona. Will you be going to Rocky Mountain this year?

^^^ jwm ...

Glad you're getting the results from the SR Black fuse. Its a terrific tweak for a very modest outlay in cash. 

I only go to one show a year now ... and that's the Newport show. I used to go to CES in Vegas every year, but I've grown to really detest that place. It takes a week to get the tobacco smoke out of my sinuses after attending the CES.

The listening session last night was the best ever.  I have two more SR Red fuses to swap out for the Blacks. One in the phono and another one in the amp. Look out ... more improvements to come. 

The SR black fuses (2) in my preamp and phonostage are burning-in nicely, starting to relax with each listen, just as you have been saying oregonpapa.

My system has ceramic drivers in the Coincident PREt’s and can present a bit edgy or harsh if everything is not just right, and they did a little but that is easing away and things are just opening up. Very nice.

I have tried flipping the fuses and the difference was clearly evident, also as reported by the pioneers on this thread. I had them in right from the start.

Thinking about two more for the scd-xa5400es now, imagine that.