Infinity's Reference 6001A mono subwoofer amplifier will add some bass muscle to your music without breaking a sweat, and it'll look good doing it. This powerhouse delivers 600-Watts RMS to your subwoofer, and its Class D design ensures the amp's high output will put minimal strain to your vehicle's electrical system. Speaker-level inputs allow this amplifier to work in almost any system, even if you're hanging on to your factory radio. You can use the low-pass filter and variable bass boost to maximize the performance of your subwoofer and enclosure, while a phase switch ensures that the bass will blend well with your full-range speakers