Audio Horizons fuses.... won’t buy them again...

If voltage variation was the problem, why didn’t the AH fuses in my speakers (always ON), did not blow?

Different deal completely. The fuses in your speakers protect the speakers from excessive output from your amplifier. If the power supply fuse in your amplifier blows it is not outputting any power at all and so will not blow the speaker fuses.

viridian
If only one in 10,000 fails why is the warranty only one month? Only in audio and politics do you find these kinds of disconnects IMHO.

Geoff, I don’t think that the point about UL listing is moot at all. The AH fuses are apparently not UL listed and may be out of spec. I would prefer a UL listed, or ISO certified as someone else mentioned, fuse in my gear and if Isoclean is UL listed that’s great. I also prefer UL listed plugs and outlets. There is a reason that electrical connectors are safety tested and rated.

>>>>Not to belabor the point unnecessarily, the UL issue is moot because all types of fuses ocassionally fail, even stock fuses, you know, Littelfuse and Bussman. It’s not the fuse’s fault if it blows — as far as we know. Aftermarket fuses have been with us for almost what, 20 years? We have know FOR ALMOST 20 YEARS that sometimes the fuse rating must be increased somewhat to prevent premature blowing. Problem solved. 

As I pointed out previously, if there was an issue with a fuse’s manufacturer, the manufacturer would be subject to legal repercussions, perhaps. But that has not happened. As least not to my knowledge, and I have been following the subject rather closely for many years. A fuse blows sometimes. That’s what a fuse is supposed to do. And when it blows it PREVENTS DAMAGE TO ELECTRONICS AND FIRES.

To the OP, Your warrantee ran out. Get over it.

Geoff, absolutely all fuses fail as do all electrical components. And I have no issue with aftermarket fuses. However I prefer a fuse that has been tested and certified in the same way that I prefer that my auto has been rated in the NHTSA crash tests.

I also prefer a warranty on a product that is longer than a month.

Putting things in all caps is a charming literary device however it does not increase the veracity of the statement.

@leog2015 
I will try the SR Blacks next time.

Did you not read my response above? Both the AH and the SR Black fuses blew in my Primaluna integrated amp. After calling the distributor, they recommended I increase the fuse rating which worked with no consequences. 

Do you believe SR would have replaced your fuses after the warranty period?