Sonic Electronix offers the MB Quart ONX2.100 400W RMS ONYX Series 2-Channel Car Amplifier
, model no. ONX-2.100, for $79.99
with free shipping
charges the same.) That's the lowest total price we could find by $29. This subwoofer handles up to 400 watts RMS and features variable bass boost, convection heatsink, frequency response of 10Hz to 45KHz, and more.