Custom 4 ohm Swedish made towers made from high quality components. These are built in a very heavy solid oak veneer cabinet with a 12" woofer, 4 1/2" kevlar mid and a 1" silk tweeters. They sound absolutely amazing and can produce very low end bass. No powered sub needed. I would keep them but I have collected to many and can't keep them all. I have a stereo receiver amp that will pair very nice with these if you are interested. They are very heavy and I can help load them up.