would be intresting if you can post some patch of the C and the emulator to compare the sound? i wonder how much the da and maybe there is a analog stage affect the sound.
i used a lot the C and to my memory it was not sounding totally like that , but it s many years i don t have it anymore so i guess it s just my memory tricking me but really not sure..from my memory it was sounding more round and muddy and dark