So here's an interesting question, raised by Halcro's comment: The XV1-s and the ZYX Universe are very similar, in that they are both low compliance, low-ish output MCs. What property would cause one of them to sound very much better in the Grandezza compared to the other? Without ever having owned either, I am guessing that the Dynavector body may weigh much more than that of the ZYX; is that the case?