John Curl's Blowtorch preamplifier

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Gold plating

there are litterally hundreds of gold plating alloys out there, none of which are 24 carat... hmmnn.. I wonder what the nickel/cobalt/arsenic impurities used to make the gold shiney do to the sound...

24 carat gold is matte finish at anything greater than 0.5 microns or so <<highly porous and soft, not good for connectors.

Pure gold on copper... really really bad engioneering practice, whatever the alledged sonic benefits might be...
 
I tried my $22 purchase last night, it works, doesn't screech or rattle, does OK. Good engineering. However, most of the time of actual use last night, it was playing a Danish language movie at low level, and I was reading subtitles. However, it beats nothing at all, and gave me a 'feel' of the speakers.
 
john curl said:
I have a premium wine store, 2 doors down. What should I inquire about? Anybody front me the money for samples? Of course, DB testing might be necessary to PROVE anything, but its worth a try.

Trust your own taste. Funny thing I've been to hundreds of DBT's where cost often had a very loose connection to quality. It never seemed to bother anybody except for a rare true snob. In the group I traveled in (no more) the brand names and costs meant almost nothing, I find this quite different with sighted audio tests.
 
I liked South African vine. I was really thinking that I liked it. But later found that among other poisons it is possible to find one less disgusting than other.

Very stupid tradition, comes from ages ago when people used sour, rotten things like brad and grape to preserve water from other microorganisms, more poisonous...
 
Heavy metal

john curl said:
THICK GOLD, that is why the connector is so expensive. Looks more dull than the nickel interfaced ones (one stripe) I use those too, but usually at line level.

By "THICK" gold... do you mean per industry standards as in Mil Spec 45204C Type I grade C Class 5 or higher?

http://www.ammetal.com/specs/gold_spec.htm

Not on those vampires... they don't tell you what 'thick' is... just "hard" gold... which by definition is not 24 karat... and is hardened by co-deposited cobalt, nickel, and carbon...

As for OFHC... hahaha... what a scam the industry has played on a gullible public...

all the best... hope all those "only the best will do" projects keep reaping you $$$$$.$$

John L.
 
Silver is really the best. Gold is plated over copper or silver to keep tarnishing to a minimum. That should be obvious. Nickel is really a lousy connector material. Almost never used for relay contacts. Why? Try to find the advantages of nickel in Holm's 'Electric Contacts'. The 'bible' of the connector industry.
 
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