MM-1525.4D

The Autotek MM-1525.4D is a compact Class D four-channel amplifier rated at 1500W maximum power. It delivers 4 x 375W at 2 ohms, 4 x 200W at 4 ohms, and bridges to 2 x 750W at 4 ohms. That gives you a full front and rear speaker stage on four channels, or two channels of speakers plus a bridged pair feeding a subwoofer.

Class D topology keeps the chassis small for the output on tap, which matters when the only mounting space left is under a seat or behind a trim panel. PRO-FI High Speed MOSFETs and Twin Coil Isolation Design keep distortion low while the amp runs at volume, and the high energy PWM power supply keeps demand on the charging system in check.

A variable 12dB per octave low-pass crossover covering 40Hz to 400Hz and built-in bass control let you shape output at the amplifier rather than fighting a factory head unit. Full-range RCA pass-through outputs let a second amplifier take signal from this one, so you avoid running another set of RCAs the length of the vehicle and the noise that comes with it.

A heavy-duty aluminum alloy heatsink with an illuminated logo handles heat and looks the part in a visible install. Nickel-plated brass terminals with angled Allen key connectors keep the wiring secure, and LED diagnostics on the end panel show overload and speaker short protection.