Reporting again on my system conversion from SR Reds to SR Blacks: A couple of weeks ago, the Blacks went into my Maggie 3.6R's to reach a new plateau of clarity and sound stage. The Maggies have always been the place of the most dramatic improvements compared to the AC mains in my CDP and amps, but here, the Blacks are a close second. I had installed the Black into my Wadia just two days ago and, today, into the mains of my ARC Ref 210s. Rather than wait, I thought best to break all three in together. The Blacks are sounding better than the Reds with no burn in--they are that good in rendering more information, and I suspect they perform well sooner because of full AC current. The sound is clearer yet--liquid, wet, silky. The bottom end is fuller, extended. With seven Blacks performing in AC power supplies and directly in the speaker signal path, there is a transformation nothing short of a major component upgrade, perhaps two components. The SR Black fuses are the best single tweak I have ever added, and this is the fifth fuse improvement I have experienced, each better than the previous. I can imagine SR's next fuse, one with even more graphene---yes, I would buy yet another round of SR's if offered.