I agree 100% with the coincident suggestion. This speaker line is truly the best buy in audio. Their sound competes with or out does the "best" money can buy designs at a fraction of the price. Every time I go to a show and hear them I'm blown away. They are amazing with tube amps!!!!! I have not had the pleasure to hear them with solid state but a good friend of mine has the pure reference hooked up with the karan kas-450 and said it is just awesome! He was using a cat jl2 signature tube amp and wanted to try solid state out and now he said he is in sonic bliss. My experience has only been with tubes and I can't think of a better all around speaker. I have no affiliation with coincident