Micrófono Finlemho con cápsula dinámica para grabación Stu SM57, profesional, para amplificador de guitarra, kit de batería, mezclador de instrumentos

What is the function of transformer ?? A transformer has a function in microphone, no matter how long the cable ,5 meter ,10 meter...its voltage is stable and transmission is stable . The result is stable sound quality . It also works as a filter to take out unexpected frequency to avoid interruption. Transmission is smooth and sound quality is clean. If you are a serious user, we sest you try it .