Boss Ar2400.4 2400W 4 Ch Armor Series Car Audio Amplifier Car Power Amp Brand: BOSS AUDIO Features: Bridgeable Soft Turn-On Circuit Thermal Overload & Speaker's Short Protection Remote Subwoofer Level Control Tri-Mode Operation Power & Protection LEDs Series: ARMOR Type: Amplifiers Amplifier Class: Class AB RMS Power: RMS Power @ 4 Ohms: 240 Watts x 4 Frequency Response: 9Hz - 50KHz THD: 0.01%