The Lanzar Optidrive OPTS180.1D mono subwoofer amplifier is a high-performance audio amplifier designed to deliver powerful and efficient bass reproduction in your car audio system. With its advanced Class-D design, it offers high-power output while maintaining low distortion and noise. The OPTIS180.1D features adjustable low-pass and subsonic filters, allowing you to fine-tune the frequency response to match your subwoofer and personal preferences.