Pyle PLAD3300D is a monoblock subwoofer amplifier designed for car audio systems. With 1 Ohm stability and a power output of 1x 600W RMS at 4 Ohms, 1x 1800W MAX at 2 Ohms, and 1x 3600W MAX at 1.3 Ohms, it delivers exceptional bass performance. It features a variable low-pass filter (50Hz - 150Hz), subsonic control (15Hz - 40Hz), and a phase shift switch (0-180 degrees) for precise audio tuning. The built-in bass boost control allows for up to 18dB of bass enhancement, adding depth and impact to your music.