The GEN-X Series has been a DS18 staple in many system builds for years and years. It’s now been redesigned from the ground up to meet the high standards of today’s audio enthusiasts so they can complete their goals for the system of their dreams with great power, reliability, and efficiency. The G1800.4D 4-channel amp has a power rating of 150 watts RMS x 4 channels at 4 ohms and 1,800 watts max at the ohm load for which it was designed-giving you pure and clean power on demand. This amp not only has the power to drive your car speakers but also not take up much space, thanks to its compact design and technology that will keep your amp playing cool and loud. This DS18 4-channel Class D amplifier is ideal for car audio, pro audio, motorcycles, off-road, DIY projects, and so much more! 1,800 watts max; 150 watts RMS x 4 channels at 4 ohms, 230 watts RMS x 4 channels at 2 ohms, and 430 watts RMS x 2 channels at 4 ohms bridged; 4-ohm efficiency at 81%; minimum impedance: 2 ohms Designed to replace factory amp or add an additional one for better sound quality Frequency response: 20 Hz to 20 kHz Signal to noise ratio: greater than 90 dB Small, powerful design powers speakers with great efficiency and power without taking up much space Selectable low-pass, high-pass, and flat crossovers Low-level inputs; high-quality terminals transfer power and signals without loss Dimensions: 10.43 in. L x 4.72 in. W x 1.96 in. H Includes mounting hardware