taramps 900890 class d hd 3000 watt rms 4 ohms automotive sound systems mono full range speaker amplifier with built in thermal management fan taramp's give your car subs a boost with the taramps hd 3000-watt 4 ohms amplifier. you'll be able to experience a crisp, clear sound as you jam out on every drive. the amplifier operates at 4 ohms with 3,000-watt rms for maximum power. the mono amplifier is full-range and can operate on all frequencies when using the right measure. in order to use the amplifier, you'll need at least 9 vdc of the minimum voltage supply. this compact amp shows much versatility as the sound booster is ideally made for most car speaker applications, but best with phenolic drivers. with a built-in 3-speed fan, the motor vehicle amplifier is able to showcase thermal management and prevent the device from overheating, ensuring long-lasting use and durability. roll those windows down, and turn up the tunes with the taramps hd class d mono amplifier.