stereophony vs reproducer

stereophony and reproducer both are nouns.

Word	Noun	Adjective	Verb	Adverb
stereophony	Yes	No	No	No
reproducer	Yes	No	No	No

As nouns, reproducer is a hypernym of stereophony; that is, reproducer is a word with a broader meaning than stereophony:

stereophony: reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound
reproducer: an audio system that can reproduce and amplify signals to produce sound

stereophony (noun)	reproducer (noun)
reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound	an audio system that can reproduce and amplify signals to produce sound