Since this amp is a Kenwood i knew it would be good, so I bought one. I ran it to 4 10's and it done pretty darn good. But I figured at this price lets get another. So now i got 2 of these badboys but I traded the Lincoln in for a Mustang so I had to lose the big box with 4 10's. I'm pushing two MB Quart 12's now (rhs something) the motor actually comes through the speaker. You guys git em for 119.00 a piece which is somewhat lower than what i paid (naturally) shoulda checked here 1st. Anyway these amps are giving my 12's all they can handle. The great part is I've stayed under $600.00 which was my limit, but now I gotta buy some dynamat. Thanks for a great product at an unbeatable price!!!