The Audio-Technica AT8801 line-powered device allows the use of remote-powered microphones with systems that do not supply phantom power. The AT8801 features a highly-regulated power supply which provides a constant voltage source, even with a heavily-loaded input. The regulator IC is internally protected to prevent overheating or damage even if shorted. The rugged steel case is finished in enamel and provides shielding from electrostatic interference.