speakers noise reduction, the devil incarnated

[raaaid]

currently im using chinise headphones worht 5.50 euros

both my niece and i rather them to the 80 euros ones i also have

if told you katy perry or rihana have amazing voices you wouldnt belive me but with these headphones you can feel it

i was wondering could this be due to these headphones not having noise reduction as dolby for example?