Best speaker purchase I've done in 30 years was to try a pair of rebuilt Quads ESL 63's by Electrostatic Solutions. Rebuilt totally and an updated power supply which really took this already great speaker up another few levels. Very natural, perfect tone and color, and placement of performance eerie good. Best vocals on any speaker, and with 2 subs they really become special. You do have to dampen the wall behind them and have them pulled out 2-3 feet, side walls not a big issue. They play at loud enough levels for most listeners, good dynamics, and the bottom end down to 35hz with no sub. Power Cords do make a huge impact in their sound, that surprised me, the standard cord was just thin and bright, added the Anticable reference power cords and wow! other cords like Lessloss worked fine also, I am sure others would also. The sound is so good that I never once think of changing the speakers or other parts of my system. It sounds like music, and you feel the music. This is what the hobby is about.