These are one of the best sounding speakers for the money. What I really like about them is the the highs, mids and lows are really distinct when you hear them, hard to believe that they are all coming from a pair of 6x9s. I run them with a kenwood excelon KDC X789 head unit wihout an external amp. They sound great but to get the maximum performance out of these speakers I would recommend to run throug a good amp because they come alive only at around 75% of max volume. They have a really, really solid construction. You are really getting you money's worth with these set of 6x9s.