After reading the review, and being a sucker for cheap tweaks, I tried them in my system. I only had two line fuses to replace -one in my Simaudio Nova CD player and one in my Simaudio W-3 amp. The latter has no cct. board fuses for each channel [probably a good thing]. I couldn't be sure of any difference first in the amp, although it sounded great with it in. I could hear the small improvement in the CD player. Nothing like the significant change when I had all the caps replaced with Black Gates. Considering what we spend on power cables, the $55. cost was a no brainer. I would recommend it.