I believe that critical listening and evaluation should be guided. To properly perceive differences, one must know what to listen for, which requires understanding the filter’s function. With QRONOS and other technologies like MQA, the focus should be on the ringing effect: that sort of duplicated image or temporal smear that is, in fact, quite simple to identify, especially when you listen to a guitar or any quick impulsive signal, as I’ve already described in the dedicated Lumin thread.