That, plus said new PCB material and aluminium enclosure are the only differencies. Price increase: from $4500 to $16.000. 4 fold !
Come on Adam,
this contradicts what you said so far concerning the developments of the Trinity Pre, which I've never listened to, but reading the rave opinions, has to be great.
Looking at the Trinity's old and the new Pre, they seems similar, but I am sure they are not, and, contrary, you belittle a new card in berkeley that instead could be the real improvement, digital filters, as you suppose to be, are the elements that can make the difference.