Precision Power PPI PC640.4 (PC6404) Class AB 4-Channel Car Amplifier/Amp

Sequenced Delays Eliminate Residual Power-Up/Power-Down Pops Differential RCA Inputs Isolate 12V/Audio to Ground, Eliminating Ground Loops and Noise Full Signal Path Low Noise/Distortion Circuitry Topology Optimal Component Layout for Minimal Distortion Induction & Signal Separation Triple Darlington Audio Output Stages Differential Drives Divide Pre-Amp & Power-Amp Stages, Eliminating Ground Looping Full Differential Feedback Surrounding Power-Amp Stages directly from Speaker Terminals resulting in Uncolored Sound Reproduction and Elimination of Ground Loops Output Stage Bias Individually Sequenced, Optimizing Sound Quality Stout 2 Oz. Copper Traces Effortlessly Transfer High Volume Internal Current Close Tolerance Signal Path Components - 1% Resistors & 5% Capacitors Parametric Bass Equalizer - Proprietary Bass Equalization Continuously Variable 41 Position Detent Crossovers Variable high-pass filter (15-4,000 Hz, 12 dB/octave) Variable low-pass filter (50-4,000 Hz, 12 dB/octave) Damping factor (100Hz @ 4 Ohms): >3000 Frequency response: 15-50,000 Hz Dimensions: 17-1/4"L x 10"W x 2-5/16"H