Fortunately, in my years of purchasing stereo equipment, I have never purchased speakers without first listening to them for an extended period of time. Since I've been an audiophile for many decades, I can honestly say the the most fatiguing speaker that I have ever trialed were the Bose 901's. They were "okay" for about ten minutes but became very poor to the ears after a full twenty minutes. I ended up purchasing Quad ESL-57's after selling my ESS Translinear II's and AMT-4's.
