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What does a Hexfred do?

I've seen some threads here, as well as some advertisements touting the benefits of Hexfred diodes in the power supply. Upscale Audio seems to think they're useful in the power supply of the Cary SLI 80. I'm always contemplating tweaks for my Cary V12, so I thought I'd ask: What do Hexfreds do, is there any sonic benefit, and if so, what is it?

Thanks!
grimace
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dweller's avatar
dweller
3,785 posts
 
Saw this on YouTube a few days ago. Talks about Schottky diodes:

https://www.youtube.com/watch?v=bXEyCf1P0UU&t=2s
kijanki's avatar
kijanki
4,428 posts
 
Amplitude of the spikes produced by rectifier diodes is not as dangerous as the rate of change (dv/dt).  Very narrow spikes will couple to any LC circuit causing ringing, even if inductance and capacitance are extremely small.  Pretty much everything has inductance and capacitance including components like resistors or capacitors, including power supply caps.
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rodman99999
6,158 posts
 
http://www.audiodesignguide.com/Ibridone/Sen_Semi_Diode_Apps-quik108.pdf
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