The DD Audio DM2500a Monoblock Car Amp is a powerful 2500W RMS amplifier designed specifically for car audio systems. With a single mono channel output, this amplifier is perfect for powering subwoofers and other bass components in your vehicle. The 1-ohm output impedance ensures optimal performance and efficiency, making it a top choice for car audio enthusiasts looking to upgrade their sound system with a high-quality amplifier. This amplifier is used and has some small scratches on the surface, and the bass level control is not included (it can be purchased directly from DD Audio).