The sound sticks come with a sub and plug into my computer. I'm listening to them right now. Mine are remans from Harman Audio on eBay. Full warranty. There was a problem and the seller even paid for the shipping to get the defective unit returned and a replacement sent to me. I live in a condo so I'm not a sub cranker but I do enjoy a little low frequency blended into my music. I think I paid around $90 for them. I've never really turned them up very loud but I'm sure that I could get somebody to come knocking if I chose.
I like their sound, looks, size and price. But then again I really haven't looked at much else. If there are bettter products at similar price points, I'd love to take a listen.