Last week about 40-50hrs in, the soundstage opened up but the politeness was gone, replaced by piercing highs. I could barely get through 1 song before having to put the ps1ke back on the stand and treat it as ambient sound.
This week, about 100hrs in, the harshness appears to be mostly gone. It's more reminiscent of the ol' ps1k now, but with more defined bass,
Will see if it changes further.