It's a really neat little toy. I had it added to a record player for my daughter and it sounded really good. She had it for 2 years and traded it for a littke bigger BT stereo i made with a larger woofer in it. This little sub plays down to 45 HZ really well actually. Surpringly well. It really has good thump on rock and metal. It struggles a bit if you try to play really low bass stuff loud. I need to put a SSF on it at around 40 HZ. It has a much much fuller sound than my JBL speaker has. I have the 5.25 inch and 6.5 tang band subs to play with also. The 5.25 is my next portable project. I have it in a shop radio now and it plays down really low. There is no other low wattage subwoofers that can compare to these. Not one I've found.Not bad for such a small speaker.