SM-2400.4D

The Autotek SM-2400.4D is a compact Street Machine four-channel Class D amplifier rated at 2400W maximum power. It delivers 4 x 600W at 2 ohms, 4 x 300W at 4 ohms, and bridges to 2 x 1200W at 4 ohms. Four operating modes cover four-channel stereo, dual stereo bridged, stereo plus bridged mono, and dual bridged mono, so the amplifier adapts as the system grows.

Despite the output, the chassis measures 6.75 x 6.125 x 2.06 inches and weighs 2.8 lb. That footprint fits under a seat or behind a panel in vehicles where a full-size amplifier would take the whole trunk floor.

Fully adjustable 12dB high-pass and low-pass crossovers each span 40Hz to 400Hz, letting you keep bass out of door speakers or focus bridged channels on a subwoofer. Frequency response runs 20Hz to 20kHz with greater than 100dB signal-to-noise, and variable input voltage from 0.2 to 6V matches factory or aftermarket head units.

Pro-Fi High Speed MOSFETs keep efficiency high through the output stage, and Sound Shield Technology adds mass to the aluminum heat sink so heat stays away from the signal during long sessions. Nickel-plated brass terminals accept 4 GA power and 8 GA speaker wire, screw-down connectors work with common hand tools, and LED indicators report overload and speaker short protection. An external 80A fuse covers overcurrent.