vinylzone is on the right track. Once you have gotten used to the quality of a standalone phono stage it is all but impossible to find anything on a card inside an amp to do anything but disappoint.
Only real advice I can give, you are right to be concerned about sound quality. Your best bet in your situation will be to keep the phono stage, sell the pre and power amps and buy a Raven Osprey. I would say Reflection but I haven't got mine yet there is a wait list and I am not about to encourage the competition.