At all, even the SR claim that the WA Quantum Chip for fuses interferes with the operation of the Black fuse is probably no longer much of a mystery either since placing a WA Chip, although it’s teeny tiny, on the Black fuse could likely cover up the Black Dot, and could, one supposes, keep it from doing it’s duty. Sorry to disappoint. On the other hand if that's what SR was referring to couldn't an enterprising audiophile place a WA Chip on the Black fuse WITHOUT cause any "interference?" Speaking of which, HiFi Tuning ships their fuses these days (or at least the last time I looked) with a WA Chip already in place. It would be really cool if the WA Chip was located on the INSIDE of the HiFi Tuning fuse but I kind of doubt that’s the case. Now THAT would be a mystery. So, I notice I didn’t get any takers on my Pop Quiz, what’s inside the WA Quantum Chip? What’s up with that?! I guess all the world doesn't actually like a mystery.