If you're referring to the upgrade from a year or so ago, the change is incredible. That upgrade "completes" the 108.
It's far more dynamic and robust. The bass has more weight and drive. With the upgrade there no longer is the DC compensation circuit which was a total PITA to adjust and I believe made the amp less stable. You can now drive the snot out of the amp and not even get the eyes to glow bright, let alone blink.
The 108 is now just flat out fabulous, across the board.
It's far more dynamic and robust. The bass has more weight and drive. With the upgrade there no longer is the DC compensation circuit which was a total PITA to adjust and I believe made the amp less stable. You can now drive the snot out of the amp and not even get the eyes to glow bright, let alone blink.
The 108 is now just flat out fabulous, across the board.