Upgraded a GG1 with engine 53 to GG3 status with E11P along with new Volume Control and USB.
I did not like the USB before or after the upgrade so I use S/PDIF.
There is a night and day difference from E53 to E11P. I am thinking of E12/2 but will likely wait a while as I am enjoying the GG3 as it is.
I have a sort of opposite view than @hilde45. I really like the coloration from the DHT's, its not that its covering up harshness its more like it makes the music bloom with space air and decay.

