I absolutely love these subs! They hit hard in my '01 Grand prix. They have made my Rear view mirror fall off on some subs. And im using the Amp that came in the package. Imagine if you hooked a more powerful amp to these babies! These things hit HARD. Ill admit i was a little leery before i bought these because there wasn't many reviews on them. But i took the plunge and did and im sooo happy i did and still very happy with them after owning them for about 4 months now. GREAT SUBS! Definitely recommend these if you want a good set up for a great price.