Mills MRA two types of different brand ?


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I know I’m probably jumping in here late, but I’m doing some research on resistors for a project I’m planning next year. The "Vishay Mills" is on my short list.

The older NOS "Mills" resistors are black in color.

The newer "Vishay Mills" resistors are brown in color.

The only difference I have been able to determine are that the older black "Mills" have the silver-plated copper alloy end-caps.

The newer "Vishay Mills" brown have just copper alloy end-caps (no silver). This would seem to coincide with salectric’s feedback that the older black Mills have more of a fast/clean sound in the high frequencies and lean bass.

I would personally go with the newer brown resistors for overall tonal balance unless you are really after that "silver" signature that pushes the upper mids / low highs -- or if you need to replace resistors in an old circuit that uses original Mills and need to match sonic signature.

http://www.vishay.com/docs/31801/mra.pdf

These are the specs for the new Vishay Mills MRA resistors.

The old Mills have a slightly better top end ,due to the silver platedcaps.
the newer ones are by no means dull just less promenant in the upper treble 
the new ones seem a bit fuller ,rounder in the Bass like a tube amp 
and nice full mids depending what driver  you are using  and need to give them 
a solid 50-100 hours from. Starting to open to fully settled me .
ifyou want better still the Path Audio. Are excellent  at $30 a pop a bit steep .
that being said the French company beginning with a L  want over $100 each 
they could be slightly better still ,but I will never know . I refuse to pay that for a single resistor. Like Duelund cast they maybe fantastic but Iwoukd never spend that much $$. I had their Jam caps same everything except for the compressed 
cardboard case , which does make it better ,but maybe 5-7% and 2x + the cost.
and hopefully your cablesand electronics are up to the task, or that is a Ton of cash spent for little return. 
Not totally True ,even before 2011 Mills had black and brown finishes which I have personally used both the same quality. Jeff at Sonic craft states this on the website . The 2011 to present say Mexico and for whatever reason are not quite as precise ,possibly quality of Copper, and no longer using Silver end caps like originals which. Suspect.
when using Tantalum resistors when AN started making with brass ,not as good as silver end caps , that’s what I got out of company changing  materials 
less quality refinement. Just buy NOS from Sonic craft,or Michael Percy.
For Loudspeakers Path Audio best anything including Duelund ,Mills or anything in between $30 each but less then 1% distortion  I only use the in my speakers now .