Is using loudspeakers for the adhaan an innovation (bid’ah)?

Repeating after the muezzin whilst doing wudoo’ and during Tawaaf

Modulation and elongation of vowels in the Adhan

When did the adhaan begin?

Was the adhan revealed by wahy or was it suggested by a sahaabi?

Should one say the Adhan and recite aloud when praying alone?

Do You Have to Say Adhan and Iqamah When Praying Alone?

Using drums to call people to prayer

How many adhaan for fajr