Monoblock Class-D Amplifier. One (1) JL Audio JD1000/1 JD Series 1000W Monoblock Class-D Car Audio Amplifier. JL Audio MX500/1 MX Series 500W Monoblock Class-D PowerSport Amplifier NEW. JL Audio MX300/1 MX Series 300W Monoblock Class-D PowerSport Amplifier NEW.
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