Anyone used these audio ceramic slow blow fuses from Littlefuse?

Isoclean fuses from Japan, from the first audiophile fuse maker, are UL listed. So are Furutech audiophile fuses from Japan.

It should be mentioned HiFi Tuning Fuses have a type quantum treatment in addition to gold infused high purity silver elements. I’m pretty sure Littelfuses do not, but then they’re only a dollar or free, or whatever.

“And you know something’s happening but you don’t know what it is, do you, Mr. Jones?”

For those who don’t know, Mr. Jones was a pin boy.

Nonoise, the original poster (RAM) of your copied quotation is an accomplished audio designer, for what it’s worth. So it’s surprising that he would simply write off the notion of fuses having an audible characteristic based upon only theoretical considerations. I don’t know if he even listens to his designs before they head out the door. The vague suggestion from the designer is that if his product designs should sound superior based upon theoretical considerations, then it must be true in reality. 

By contrast, Paul McGowan of PS Audio in the above YouTube clip came to the conclusion that the fuses have audible characteristics based upon listening sessions, where some “sounded better” (e.g., less grunge, greater clarity and openness etc.) than others. While Paul admitted he didn’t understand why such is the case, PS Audio include fuses having better sonic qualities in their products. 

And on the assumption one can find a supplier of those Littelfuses (Mouser and DigiKey don’t carry them), they are $8-$10 per fuse to the customer, plus tax and S/H. 

Celander, yes, I've been following this and other threads and really don't mind the back and forth. It's just the attitude and closed minded nature of some that gets my hackles up. 

I've seen that video of Paul's and linked it before and yet those who've seen it just dismiss it as not valid enough for them to consider it. There's only so much one can do.....

As for the costs of the Littlefuses, I'll gladly pay twice that for the PADIS fuses as they go further in their construction and metallurgy and still meet all criteria for rating from the good old USA to Europe to Asia. 👍

All the best,
Nonoise

I designed a lot of equipment with Littelfuse devices.  Not all of them are cheap, some are pretty pricey, the last 10A, 600VAC ones I used were 20$ each in quantities of a 100 but they are all very good quality.   The gold does make sense, there are solid engineering reasons for gold contacts, of which I am sure most everyone knows.   As for the fuse 'inards', they still have to meet the I2t spec.   The last amplifier I designed I put the fuse in the feedback loop bypassed with a 100K resistor to eliminate the non linearity of the fuse.   I'll have to check these out.

Photon46: 
celander is correct, I got them as free samples from Littelfuse (in China) on their website. His product numbers are correct. Their website is a bit difficult to navigate, but if you take some time to figure it out, you can order some FREE samples. The ship quickly via Fed-Ex from overseas, and I got mine in about a week. I got two for my Job 225 amp, one gold plated and one rhodium, and tried them both last week. I got the same results as I did with their fuses in my Benchmark DAC3...The gold plated one is warm and rich, with good bass weight, sweet on the top end, and highs are slightly rolled off. Rhodium was my favorite, with more extended highs and a bit more attack than the gold ones. Great rich tone, never edgy. I liked the rhodiums more than stock glass fuses due to their tone. I also compared the rhodiums to my Synergistic blue fuses in both components. The blues showed a very noticeable improvement in small background details and especially the added "ambience" to the soundstage in my room, and the way the notes "lingered" in the room and decayed more realistically. Both the stock fuses and the Littelfuses were not able to compete in that area to the blues. I did like to tone of my system a little bit better with the rhodiums though. I know the Synergistic fuses are insanely priced for a fuse, but I have used other tweaks that made similar improvements for the same money, and ended up not being able to enjoy the system as much without them either. 
If you are one of the "naysayers" out there who refuse to spend a penny on upgraded fuses because you claim they won't make any sonic difference, do yourself a favor and order some gold and rhodiums from them for FREE, and actually take the time to listen and compare. If you can't tell a difference with your ears and your system, then you can smile and know that other similar, simple tweaks are also a waste of time and money for you as well. For the rest of us who are "cursed" with the ability to hear these differences....keep on tweaking!