18 June 2020 Do I need a microphone for the ESX-1? In general, yes. In quieter settings the ESX-1 will be plenty audible, but like a vocalist, it cannot compete with an amplified instrument’s volume level. A traditional dynamic vocal microphone is perfect for amplifying your sound. Related | Share Post Comment on this FAQ Cancel Reply Save my name, email, and website in this browser for the next time I comment. Notify me of new posts by email.