I tested the fuses (reluctantly, until provided with a pile of them that I couldn’t resist playing with), and found them to be merely fuses, and not very safe fuses at that. That in itself should be helpful information for those considering wasting money on these silly items. You’re welcome. The fact that "clean your fuse holder" Almarg has been deemed a troll by some here speaks volumes of the mind set among some of the magic fuse Athletic Supporters in this thread, and Al is welcome to visit my PA festooned box under the freeway anytime. A note regarding technical explanation…For decades I’ve hung with and spoken to successful cable designers, speaker designers, amp designers (both home or pro use) and serious musicians who are also audio geeks, and pretty much anybody will readily and unhesitatingly discuss the whys and wherefores of their gear if so disposed to do so…Bill Low entertained me with logical and well reasoned cable design wisdom for an hour before a jazz show I was mixing (there’s that swine PA reference again!). He seemed legit, and not one to simply throw a "low manufacturing cost relative to extreme high retail price" Carpel Tunneled (I mean Quantum Tunneled) gizmo at the Subjective Audio Geek market without supporting technical reasoning…my issues with SR’s ability to fill their corporate coffers by using threads like this to promote Quantum Trammeled Carbon pleasure placebos to rabid seekers is my main reason to keep showing up here…that and the fact that I refuse to be bullied off by boneheads.