I haven't, but I did now, and there were a lot of data there that I wasn't aware of. Tx for the tip.
If we take the article as correct, then we should imply that all companies that sell
consumer dac/amps, amps, headphones, saying they are 24 bit or compliant or
show a frequency range above 20kHz are doing this for pure marketing reasons?
That is a bold statement, I believe.
Some years ago, there was a hype about PMPO, maybe you remember that.
Sony stereo systems came with a tag stating that they give a PMPO number for
the sake of comparison for the consumer, but they warn that this measure
has no technical significance, only RMS has. PMPO was just a number. I wonder if world class
manufacturers, such as Sennheiser, Denon, Grado, wouldn't warn the consumer
for similar reasons?
One thing I was thinking these days, about consumer 24bit amps or dac/amps and so,
is this: if you supply 1Vp for your headphone with 16bit resolution, that would give
a 31uV quantization step, which is a very demanding circuit design already.
Now, if your system is running with 24bit quantization, that would be an 119nV quantization step,
supposing a linear curve. And that is a spaceship-grade noise level/quantization noise/quantization error,
even with dithering considered, which raises up some serious doubt about consumer products with these specs, indeed.
In conclusion, I am eager to listen from manufacturing people what they know,
it's a bit of a gray area for me yet.