Nady SMPS-1X 1-Channel 48V Phantom Power Supply for Condenser Microphones Provides 48V DC phantom power for condenser microphones. Power: 18V AC, 300mA (adapter included). Frequency Response: 10Hz-30kHz. Discharge Time: &lt;35s (no load) Balanced XLR microphone inputs and outputs to connect in-line with your microphone and mixer Low noise full-frequency response On/Off power switch and LED indicator Durable, compact, all-metal housing