MTX MUD100.4 400 Watt RMS 4-Channel Amplifier Amp For Polaris RZR/ATV/UTV/Cart

The MTX MUD100.4 is the most compact amplifier MTX has built, and it still delivers four channels of real power: 50 W RMS per channel at 4 ohms, 100 W RMS per channel at 2 ohms, and 200 W RMS bridged per pair at 4 ohms, with 400 W peak handling. It fits side-by-sides, boats, sand rails, and motorcycles where space is measured in inches.

Full range class D topology delivers strong sound quality with high thermal efficiency, which is how a 6.52" x 5.51" x 1.86" chassis handles four channels without cooking itself. Frequency response runs 10 Hz to 32 kHz with THD under 0.2%, so it stays accurate on door speakers, a sound bar, or a subwoofer.

Everything about the build assumes bad conditions. The unit is IP66 weather resistant, the circuit board is conformal coated, and the control adjustments sit under covers that keep moisture out. A wiring pigtail carries power, ground, and signal connections away from the amplifier body, so you never open a connection point next to the electronics. Mud, dust, and water stay outside where they belong.

Fixed high-pass and low-pass crossovers at 80 Hz, 12 dB per octave, let you assign channels to full-range speakers or to a subwoofer without adding an external processor. Maximum sensitivity is 200 mV with a 5V maximum input signal, so it pairs with powersports head units like the MTX AWMC3 or with a factory source.