MM-2025.4D

The Autotek MM-2025.4D is a compact Class D four-channel amplifier rated at 2000W maximum power. It delivers 4 x 500W at 2 ohms, 4 x 250W at 4 ohms, and bridges to 2 x 1000W at 4 ohms. That covers a four-speaker front and rear stage with headroom to spare, or two channels of speakers plus a bridged pair running a subwoofer.

Class D topology keeps the chassis compact for the output available, so the amp fits under a seat or behind a panel where a larger unit will not go. PRO-FI High Speed MOSFETs and Twin Coil Isolation Design hold distortion down at high output, and the high energy PWM power supply limits strain on the vehicle charging system.

A variable 12dB per octave low-pass crossover covering 40Hz to 400Hz plus built-in bass control let you tune output at the amplifier rather than working around a factory head unit. Full-range RCA pass-through outputs send signal on to a second amplifier, which saves running another set of RCAs the length of the car and reduces the noise those runs pick up.

A heavy-duty aluminum alloy heatsink with an illuminated logo handles thermal load in a visible install. Nickel-plated brass terminals with angled Allen key connectors keep connections tight and reachable, and LED diagnostics flag overload and speaker short protection from the end panel.