Wait a second.... are we accusing the leading manufactures of electronic test instruments of selling test equipment that doesn't meet the performance specifications because they didn't use audiophile components?
No scientist in their right mind conducts a measurement with an instrument incapable of resolving the desired signal. This is experimental methods 101.
Precisely. But not for not meeting specs - only not trying to do best that can be done, they are clever enough to spec their equipment correctly.
I do not like quality parts being called audiophile - as it has become some sort of derrogative term. But it is indicative tha audiophiles demand such quality and measuring pros do not.
If you check the capacitors measurement links - the FIRST thing that had to be done in order to be able to measure well was making of an oscillator with low enough distortion. By a man who spent great chunk of his life understanding and perfecting capacitors - and presumably had everything commercially available for testing. When you reach the point the instrument is less perfect than device under test, no other way than replacing the instrument. Which usually means building your own.
It happened before - late 70/80s best tuner manufacturers were coming up with tuners that had better specs than the best officially in the US available FM signal generator by HP. It was Matsusiita generator from Japan used to establish those figures - and Tandberg of Norway also had their own , at least on the par with Matsusiita - or else they could newer have built (and align) tuners of the quality they did. As well as was done by the Sage Audio in England in 80s - their power amp
modules were at least one order of magnitude better spec'd for distortion than the best HP signal generator at the time. Again courtesy of custom made generator.
So much for the leading manufacturers. They do not per default push the envelope. Mostly only when forced by the competition.