Describe ube sound vs solid state

Mapman, Gpgr4blou, Please realize that chart reflects how humans hear/percieve undistorted musical instruments/sound frequencies. One would not hear/perceive those instruments/sound frequencies as the chart portrays if the sound was distorted (for example; deviating from flat frequency response) before one heard it. For the purposes at hand it's merely an academic curiosity, and flat frequency response from our systems is still highly desirable.

you'll hear the frequencies as described be it signalk distortion, whatever. Of course the goal is always to minimize distortion or at least what is perceived as distortion.

If you look at frequency response of some transducers, like certain headphones you can see some are designed to compensate for ear sensitivity at various frequencies at various DBs and some do not. Much like the old style loudness controls on vintage receivers and amps.

What sounds best is solely a matter of preference but in general keep noise and distortion to a minimum and things should sound pretty good personal preferences aside.

^I'm sorry, but I don't understand the first sentence.
Headphones are typically an unnatural way of hearing things. Some headphones use signal processing to try and compensate for this unnaturalness.
Old fashioned loudness controls allow for some compensation of the way the human ear perceives sound at unnatural lower volume levels. Which interestingly enough, is further argument as to how the above mentioned graph only reflects human hearing/perception vis-a-vis an accurate stimuli.

I own a fairly good set of cans, they sound good, but I still prefer the two channel magic of a good sound system more.

In many ways headphones are the most natural way to listen to music. I'll tell you why. There are no room anomalies to worry about. There are no speaker cables to worry about. There are no big honking magnets in speakers to hurt the sound. There is no crossover. You usually run Class A all the way. There are no (phase) issues with multiple speaker drivers. No issues with trying to locate the ideal speaker locations. No need for a preamp in many cases. Thus, the sound of headphones can often be more natural than speaker systems in terms of transparency, dynamics, inner dynamics, air and tonality.