Summary: I am using the stock radio with a Rockford Fosgate T1000-1bd amp running at 4 ohms which is 350W, and it sounds really good. If you want to add some nice bass then this product does it very well. The neighbors still hear you coming, you're just not knocking down their pictures.
Summary: I just recently just installed this for my car and it was nothing i was expecting for a tube it hits louder than what i thought even my installer was surprised as well, if you want good and deep bass i highly recommend this product hits all the beats!!!!
Summary: Good clean sounding bass and responsive. Keeps up with most of music I play. If your looking for rich, deep bass within the cab an open vehicle it gets the job done. If your looking to rattle pictures off walls going thru a neighborhood or set off car alarms; this is not for you.
Conclusion: The key is to install this properly in your trunk with the sub facing towards the license plate and have the right amount of power. Nice, tight bass that will accommodate any kind of music you like!