Make sure you have turned on Phantom Power +48V, It is essential to make sure that your system has phantom power +48V, because Seruniaudio SEM-01 is a condenser microphone, and it needs phantom power +48V to work porperly.

Phantom power +48V can be found on your audio interface, professional mixer, and acoustic amplifiers. If your system doesn’t have any phantom power, you can use external phantom power supply that flies around the market, such as Samson S-phantom, Alctron PS200, etc