ridhuankimI'm Batman! :)
Okay, it was really a silly question, let's say, I was too sleepy when I asked. ;)
(I was just wondering if a device is able to play very good quality music, will this not imply that frequency response is larger, even if one's ears can not hear? (like 20hz-30khz))
BdropThere are devices that are designed to be capable to produce and handle frquencies beyond human frequencies.
For example, you can find amps that handle higher frequencies such as https://www.massdrop.com/buy/appj-mini2013-6j1-6p1
There are headphones that do the same.
But you will also find devices that do not cover the full human frequencies.
At one point, even the digital audio files were trimming above 16khz because some people believed they were not critical to music and that most people could not hear. Some headphones go below 20hz and above 20khz.
If you compare that with non trimmed one, hoping you have sufficiently good musical devices, should be able to tell the differences.
Now if you cannot hear above 20khz, why would they even make them go beyond it?
I don't know but honestly if I were given an option to choose, given they both have equal sound quality, I would choose the one that goes beyond the human frequencies without hesitation.
I guess at least it has marketing advantage ;)
Edit: simple answer to your question. High resolution monitors do not guarantee they will display true colours and real to life image.