Kicker 10zx2500.1 2500 Watt RMS Mono Class "D" Car Amplifier Kicker 10ZX2500.1 Mono Car Amplifier with 2500w RMS and free bass remote The most powerful amp of the ZX series! Top mounted controls KICKER Amps actual power always exceeds its rated power, documented inside each carton Birth sheet with actual tested power included with each amp in the box