Questions about mp3 quality vs hi-fi system, Is logical to listen mp3s with a serious system? Options

[pietrosolar]

Hi guys,
I was questioning about my music library, some of it: flac. Other: mp3

Now: I really have not a great system (just a good pair of headphones, and a usb dac). But I was thinking at it in general: until what could be have a sense to listen mp3 music with a good system?

I mean, if u listen music with the notebook ampliers hardly you will recognize differences beetwen a mp3 128 kbps and a 24bit-etc.... So when, with what kind of system u will be able to listem differences, or to feel the bad quality of a 320kbps mp3?