Rockford Fosgate Punch PBR300X1 300 Watt Monoblock Amplifier The Rockford PBR400X4D is a

The Rockford PBR400X4D is a full-range 4-channel car audio amplifier designed for stereo front/rear systems that requires little space

There are three sets of RCA inputs and three sets of 5V outputs with a selectable 180◦ Phase switch

while having that peace of mind in owning a great Massive Audio subwoofer

Sensitivity: 85 dB

adding plenty of punch to the speaker's impressive performance

Rockford Fosgate Punch PBR300X1 300 Watt Monoblock Amplifier The Rockford PBR400X4D is aThe PBR300X1 is a mono car audio amplifier designed for a subwoofer system that requires little space. The BRT (Boosted Rail Technology) is an ultra efficient design that doesn't even use a switching power supply to generate its 300 Watts of power! The BRT also has a variable hi level DC offset turn on circuit for easy installation into any OEM system. See our Element Ready amplifiers designed specifically for Motorsports and Motorcycle applications.