Truly dynamic, now I may be loosing a little bit of my hearing at my age, but I can tell you these are as good as the original Quart's of 1992 which I still own. I'm powering them with the new MB Quart ONX4.125 and paired in parallel with Quart 1.6 tweeters. I was leary about what ohms the amp might see being the Polks are 2.7 ohms and quarts being 4. The amp has plenty of headroom and runs cool to the touch.Have to love technology in manufacturing. Great product.I hope they stand the test of time.