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NHT B-12d 500-Watt Powered Subwoofer with DSP (Piano-Gloss Black Single)

Acoustic suspension - system use the trapped air to control and damp the speaker movement like shocks on a car
Compact size - Only 14 cube yet has more output than its predessor
PWM Amplifier - a really smart efficient power plant design is crazy efficient up to 80 so you get to rock out and stay green at the same time
DSP - The DSP controls the equalization compressor low pass and high pass filter functions
Wireless sub option uses USB input for both power and signal input - no jumpers needed