Thanks for taking the time to put this together. I have owned my ISA 428 for over a year and have been very happy with it, but I don't own any high end pres to compare it against. I was very happy with how it stood up against what most would call higher end pres.
I see you have the optional converter card for the 428 in the pics above. Have you ever compared it against your 192 (clocked to the big ben). I have a 002 and the 428 convertors are certainly an improvement, but I have always wondered how that optional card stacks up against more high end stuff.
Not trying to give you something else to do, just wondering if you would share your thoughts
Thanks again for posting the files