Nemesis Audio FIERCE-2.5KD 1-CH Monoblock 2500 Watts Max Class-D Car AmplifierBRAND NEW NEMESIS AUDIO FIERCE 2. 5KD 1 Channel Monoblock 2500 Watts Max Class D Car Audio Amplifier Key Features: No. of Channels: 1 Max RMS Power Output @ 1 Ohm: 2500W 1250W Max RMS Power Output @ 2 Ohm: 1600W 800W Max RMS Power Output @ 4 Ohm: 1040W 520W THD: <0. 3% S N Ratio REF 1W @ 4 Ohm: >90dB Gain Range: 0. 2 10V Per Octave Slopes: 24dB Crossover Range: 50 250Hz Operations Frequency Range: 20 500Hz Bass Boost: 0 18dB Bass Knob Included