Synergistic Red Fuse ...

Allow me to draw your attention to some of the conclusions found on the data sheets of HiFi Tuning, manufacturer of the HiFi Tuning fuses.

o Aftermarket fuses gave the best results for conductivity and HiFi Tuning cryogenically treated fuses gave the best results of all fuses tested.

o Aftermarket fuses almost always tested and sounded better than stock fuses. [Editor’s note: a stock fuse in the correct direction could sound better than an aftermarket fuse in the wrong direction and a stock fuse that’s been cryogenically treated could sound better than an aftermarket fuse that hasn’t been treated.]

o Fuses with smaller dimensions were found to sound better than fuses of the same value with larger dimensions.

o Fuses (both stock and aftermarket) from different manufacturers sounded different. We attribute that sonic difference to different materials used in the due wire and contact points and or different purity of the same material in the various fuses tested. The (obvious) differences in sonic results of various fuses of the same value could not be completely explained by the measurements, which were relatively small.

o There is a measureable difference in directionality of fuses of around 5% for all types of fuses.

have a nice new year

geoff kait
machina dynamica

If it's measurable can you provide the measurements please?  

And almarg, I believe I can solve the mystery.  It's called confirmation bias. 

 
analogluvr
If it's measurable can you provide the measurements please?

analogluvr
And almarg, I believe I can solve the mystery. It's called confirmation bias.

Analgluber, thanks for asking. HiFi Tuning data sheets at,

http://www.hifi-tuning.com/pdf/wlfr.eng.pdf

How does one measure confirmation bias?

have a nice new year

I have provided detailed comments on the HiFi Tuning measurements on a number of occasions in this and other threads.  For example see the first of my posts dated 5-14-2012 about 3/4 of the way down on this page in the "Fuses That Matter" thread from several years ago.  And regarding their directionality-related measurements see my post dated 4-8-2016 near the middle of this page of the "Quality and Security of Littelfuse Products" thread.  And I had provided further comments about directionality in the first of my posts dated 10-28-2016 near the middle of this page of the present thread.  The bottom line, as I stated in the first of those posts:

I don't exclude the possibility that a fuse change can make a difference, but once again the explanations that are offered in support of the existence of those differences do not withstand quantitative scrutiny.

Regarding the comments about audio being a combination of art and science/engineering, I certainly agree.  In fact that is one of the reasons I became interested in audio, several decades ago, and continue to be interested in it.

Regards,
-- Al