Sound Storm Laboratories L20 Lowrider Bass Generator with Remote Subwoofer Level Control Maximum bass control Dash-mount remote controls subsonic filter and bass levelLED display of bass restoration activity Parametric bass controlPFM subsonic filter Balanced inputs Bass output control PWM high headroom power supply Output level: 10VFrequency response: 10Hz - 100kHz THD: 0.003%Signal-to-noise ratio: &gt;130dBBalanced input noise rejection: 60dBDimensions: 7-1/4" (W) x 7-3/8" (L) x 1-5/8" (H) Dash-mount remote controls subsonic filter and bass level LED display of bass restoration activity Parametric bass control Balanced inputs Frequency response: 10Hz - 100kHz