update after break in. I believe they have around 40+ hours on them now with me listening and leaving them on when we are gone. I will say right now that it took quite a while for the bass to develop on these speakers but they have. The compression drivers on the M3 Turbo's are excellent. The highs are very detailed and smooth with zero fatigue factor and my wife keeps saying how she can listen to these for hours with out wanting to leave the room due to volume. We listened for hours yesterday and loved it. The M3's are magical at soundstaging and imaging and do better then probably any speaker I have heard recently when it comes to these things. Also there is zero crossover distortions and I cannot tell when one driver hands over to another. Also the separation of instruments is world class in my book and are as good or better than any speaker I have heard. So far I am very impressed and am loving my system more than ever