Feel the bass with the BOSS Audio Systems Elite series BE1200.1D class D Monoblock amplifier. With 1200 watts Max power and MOSFET (Metal Oxide Semiconductor Field-Effect Transistor) power supply, this amplifier offers both stability and power. Customize the sound with variable low Pass crossover, variable bass boost, variable subsonic filter. The remote subwoofer control gives you the ability to choose how much bass you want to displace. 1 Ohm Stable The lowest impedance accepted by this amplifier is 1 ohm. Amplifiers that are 1 ohm stable produce the most power possible from the amp. An amplifier capable of delivering power at a 1 ohm load is usually reserved for serious subwoofers that can handle the power. Please note this particular amp needs a healthy electrical system including a low gauge wire capable of delivering the necessary current. Class D Amps Class D is a high speed switching amplifier technology that is more efficient, generates less heat and draws less power than traditional Class A/B amps. We use Class D in our monoblock amplifiers to give you massive amounts of power in a relatively small footprint for clean, powerful, bass. Fixed High Pass Filter Fixed High-pass filter gives you the ability to filter the frequencies that pass through to the full range speakers from a fixed frequency point. High and Low Level Inputs An amplifier with both high-level and low-level inputs provides flexibility by allowing you to build an audio system using virtually any standard factory or aftermarket source unit. High-level (speaker level) inputs accept the signal from the speakers, while low-level (RCA) inputs accept the signal from the pre-amp outputs of the source unit. Illuminated End Panel Strips The end panels of this Rage Series amp has Blue Illuminated light strips that glow when the amp is turned on. Protection If the amplifier gets too hot, the thermal protection circuit turns the amp off and allows the amp to cool down before turning it back on. If a speaker fails causing an electrical short, the protection circuit will automatically cut the output and remain in that state until the short is resolved. These safety features give you peace of mind knowing the amplifier is constantly monitoring conditions to protect itself. Subsonic Filter A subsonic filter is designed for use on subwoofers. Since not all subwoofers can reproduce the same low frequencies, the subsonic filter can be set for optimum bass response in order to keep the driver playing efficiently. Subwoofer Level Control The ability to boost or attenuate the sub level when an amp and subwoofer are connected to the subwoofer pre-amp output. Switchable Input Sensitivity Switchable Input Sensitivity gives you the freedom to connect the amp to any standard source unit and have peace of mind it will be within range to properly match the output of the source unit allowing you to use the volume controls on your source unit the way it was designed. Variable Bass Boost Variable Bass Boost allows you to adjust the low bass within the boost range to just the way you like it.