UR44C D PRE's

Hi all… does anyone know if the D pre’s in the ur44c are the same as the mr816csx. I am going to update studio and cant find info on whether the D pre’s are of equal, worse or better quality than what I have in the mr816csx. Also is anyone using an 80 ohm dt 770 pro with the ur44c if so how is it? One more …how is the latency?

Do not know if this is of some help, but I have the UR816C and use a 250ohm DT770 Pro, works just fine, sounds great and more than enough volume on the phones ouput.