Karaoke Forums

i was told this on my last sub.my question is,do different systems playback some recorded material differently?
i record to my laptop via "mic in" from yamaha emx mixer,recording with adobe audition.sounds ok when i play it back.then i save as an mp3/mp3pro.playback still sounds clear to me.ill get on my network and retrieve the file and save it to my main computer and again it still sounds clear.
my equipment and software is new to me and i am slowly trying to figure it all out,just wasn't sure why to someone it sounded like an am radio and to me it sounde crystal clear.  thanks!