May I suggest that you purchase a high rez song that you like and place it on a USB stick together with an mp3 at 320kps. Go to a phone shop with your favourite headphones and ask them to put both on a phone that you may want. Then listen for yourself. Do the same thing for a high res player in another shop.
You ears will tell you what you need to know. Simple solution as I f the shops want to sell you the items they will let you do this, if they don't let you spend your money elsewhere.
You ears will tell you what you need to know. Simple solution as I f the shops want to sell you the items they will let you do this, if they don't let you spend your money elsewhere.