I have x4 ultras. Bass is huge: deep,fast, tight and detailed. Speakers must be positioned optimally for this. Mine are 4 feet from back wall and about 3 from the side wall. Mids are good, detailed and clean without edge or brightness. I would say the Joseph's mids are a bit more rounded and human sounding, one of their strengths is their naturalness in this region. Spatials highs are phenomenal. I'm a big fan of the AMT driver. No conventional tweeter sounds as smooth, extended and detailed to me as this does. Scale is huge. Very immersive and enveloping (this is big for me, and conventional speakers don't do this in my experience). The dipole design and open baffle dispersion pattern have a lot to do with this. The Joseph's sound way smaller and constrained (as do all conventional designs). Getting rid of the box changes everything. Not everybody's flavor, but I can't go back.