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Jl Audio M400/4 Full Range, Class 2/3/4 Channel Marine Amplifier . 400W 2/3/4 Channel Marine Amplifier with patented Technology; Single Cycle Control. Two Stereo Pairs On-board Crossover: State-variable, 12dB/octave Butterworth with continuously variable cutoff frequency selection from 50-500 Hz. Configurable as Low-Pass or High-Pass. Defeatable. S.. |
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