The Retrosound speaker isn't anything special as far as sound quality, but it does have a couple features that are helpful. It can be wired to be an 8 ohm speaker to work with the old radios. Doing this requires losing the stereo feature it has if wired as twin 4 ohm speakers. If you're looking for 4 ohm stereo, you're better off using twin 4" speakers and a homemade adapter. It'll give you much better sound than this speaker.