I've had both of these preamps, your idea of the GCPH being better is IME, the better sounding unit.
I then moved on to the Simaudio Moon LP 5.3, with outboard power supply. That was much better, but I wound up selling it to someone with the Dyna P75.
He wasn't prepared for how much better his Scout sounded. I moved on to a tubed phono stage (Modwright SWP 9.0, w/upgraded power supply), that will remain in service for me for the unforseeable future. It's a real keeper.
I then moved on to the Simaudio Moon LP 5.3, with outboard power supply. That was much better, but I wound up selling it to someone with the Dyna P75.
He wasn't prepared for how much better his Scout sounded. I moved on to a tubed phono stage (Modwright SWP 9.0, w/upgraded power supply), that will remain in service for me for the unforseeable future. It's a real keeper.