I have my Earthquake MKV subwoofer for sale. It is in the black rough finish, which is more durable. It has the 600w amp and remote control. There are 2 RCA preamp inputs and outputs for daisy chaining. It also has the phase, volume, xover frequency settings. It has performed great with bass down to 20hz.
I have original box, manual, and remote for the unit.
Thanks for looking
$910