Microphone preamplifier

/mˈaɪkɹəfˌəʊn pɹˈiːɐmplˌɪfaɪə/

/mˈaɪkɹəfˌoʊn pɹˈiːɐmplˌɪfaɪɚ/

an electronic device amplifies the weak electrical signal from a microphone before it is further processed or recorded, enhancing its strength and quality