Features 150 Watt Class D built-in amplifier Variable Bass Boost: 0dB – 12dB Remote Bass Level Control included Hi-level / low-Level inputs 0*/180* phase selection Thermal and Short Circuit protection circuit Remote / Audio Sensing turn on select switch Specifications RMS Power: 150 Watts Frequency Response: 20Hz-150Hz Variable Low Pass Filter: 50 Hz - 150 Hz High Level (Speaker Level) Input Sensitivity : 1V -18V Low Input Sensitivity : 300Mv - 8.6V Fuse: 20A Product Manual Product Manual PDF