Phantom power supply for microphones. Different condenser microphones specify different amounts of required phantom power. As a rule these ratings can range from 48 V all the way down to 9 V. Fortunately, there is some flexibility in terms of matching phantom voltage to your mic. A rough rule of thumb would be ''more is better''. Features XLR input and output, and 18 V DC input. Power supply is included. Dimensions: 130 x 74 x 45 mm. Weight: 315 g.