ST4.1000D

The ST4.1000D is a compact 4-channel Class D full range amplifier sized for Polaris RZR, ATV, UTV, motorcycle, marine, and car installs where space is scarce. Class D full range technology packs serious output into a chassis small enough to hide behind a seat or under a dash. High power capability, high efficiency, and tight component tolerances mean stable performance that holds up next to traditional full range amplifiers, with far less current draw and far less space. Output is 90W RMS x 4 at 4 ohms and 250W RMS x 2 when bridged at 4 ohms, with 1000W max power. Four channels means a front and rear pair of pod speakers on one amplifier, or a front stage with two channels bridged for a subwoofer. A hybrid aluminum alloy heatsink moves heat away from the board, which counts in sealed compartments behind a cage or under a seat. Military grade SMT PCB construction keeps performance consistent under constant vibration, and direct short, thermal, and overload protection circuits step in before a fault turns into damage. High level or low level RCA inputs accept 200mV to 12V, so the amplifier ties into a factory radio or an aftermarket head unit directly. Variable 12dB high pass, low pass, and subsonic crossovers let you assign ranges per use. Quick disconnect RCA, high-level, power, and speaker harnesses make removal for winter storage or service quick. The chassis measures 6.5 x 3 x 1.5 inches, so it mounts in places a traditional four-channel amplifier will not fit.