Experience with high end fuses????

Perhaps a bit of reading would have eliminated your confusion? Note that HiFi-Tuning's literature mentions their fuses having a, "burn wire"(like any other miniature fuse) and nothing else, outside of endcaps and a body. Further- that the company "logo"(NOT, "schematic") indicates the fuse's directionality:(http://www.ultrasystem.com/usfeaturedprodsFUSE_LIT.html) BTW: I can't speak to whether the fact that I'm using them in tubed monoblocks(two fuses each), with dedicated AC, FRED rectifiers and upgraded PCs, makes a major difference or not. But I suspect that it does. Those changes were made incrementally, and time given between each, so any differences could be noted independent of the prior. Happy listening!

I have the logo part now.But secondly,I was speaking of this company stating that it has a UL approval.That's an improper claim to make.Any company that makes electric products should know this.That may be a violation of FTC laws among others. There are no UL approved items.Oh well,keep enjoying your modded Cary amps.I've enjoyed their amps in the past.Good gear. [http://www.positive-feedback.com/Issue22/isoclean.htm][http://www.vhaudio.com/isoclean-fuses.html]

In fact I have tried many.. Isocleans are good, Hifi tunings might be a little more costly in construction actually as a regular ceramic vs. glass may be. However in the end I did find Isocleans very good with Tube gear, and Hifi tuning better with Solid state gear, but in most cases they both work just as well. There is one issue most don't realize, desired "Notable" effect is probably still very subtle however most prominent when replacing fuses in the Power amps, then the Preamp, then source gear will have the least effect as it just draws less energy.

The only way I have totally proven that they do in fact work by extending power and frequency response over standard and ceramic fuses is to actually replace every single fuse in my signal chain. Reason for most not getting full results is they start with one or two and hope for the best being they are rather costly. But when I pushed them into all gear including Power conditioners, Balanced transformers etc... feeding the system as well as the gear itself it made excellent results.

This will take some open minded approach and cost to do in most systems, and this will be effective. The problem with these fuses is the marketing alone, they do charge a bit much, and they have no trial period so you just lose money because nobody is taking them back, maybe even a re-stock fee?

If you skip some gear skip the front end gear for the most part in my opinion. Change the amps and any other power equipment for more results.

It has been beyond my ability to notice any consitent, identifiable improvements with these specialty fuses. But that might say more about my hearing than the fuses. To me it is just part of the hobby and if you can excited by the prospect of adding a $25 fuse that will make your system sing, why not?

This is one area of our hobby that does not make any sense to me;that a fuse can make a audible difference;maybe I don't have the ears to hear it though.