@dayglow I am lazy so playing half sides is more work, I admire your system of thought and process. I am glad others took your invite to comment on SQ and more. I agree, I find it helpful as a start. Now IF you say your reference tweeter is a piezo electric bullet, I will add a pinch of salt...but it will be pink salt from the Baltic, cause I am pretentious, that way ( this is a joke )