Yep. In my view having a waveguide is one of the necessities for good sound, but not the only one. The maker can still chose a bad or non matching driver.I misunderstood you, I thought you were saying that the Amphions measure well yet sound bad. Just because it has a waveguide is certainly no guarantee that it measures well. Not all waveguides provide superior polar response to direct radiating tweeter, although of course a good one should.