This regulated phantom power supply module is ideal for supplying 48 V DC power to a microphone. The module also provides additional 5V and -15/0/+15V outputs. This high-performance module is regulated by LM317, L78 and LM337T voltage regulators, providing your equipment with a clean, stable power supply. A switch makes it easy to switch the module on and off, and variable resistors can be used to adjust the various output voltages.