The cleanliness of the highs is unbelievable even at high volumes. They combine perfectly with the midrange of the same brand from 200rms and above. What someone should pay attention to is if you work them through an amplifier, the preamplifications of the source outputs should be of good quality so that they don't "squeak" at high volumes. The same will of course happen with the rest of the speakers. And of course, an important factor is the proper adjustment of amplifiers and equalizers!