I have a pair of Studio 590's that I think sound awesome! If I'm not mistaken, the Studio 5 speakers were the last series designed by Greg Timbers? Again, I could be wrong. They will actually rattle the walls a bit given the right amplification. Recommended power rating is 250 watts. My restored Marantz 2330 (non B) may get to around 160 watts on a good day but it drives the 590's very well! I have been toying around with getting a pair of Studio 230's for my modest living room system. Haven't pulled the trigger yet but maybe soon.