@morillionpcm1804 like your idee.. but finish? ...but most of the delicate work is done at the level of your prephono...
We'll see how we finish the PCM1804 eventually, after I tested its use (and decided for it...):
A case, to e.g. also house a matching (linear) power supply is available here. The ultimate goal would be to integrate the ADC into the Flex Eight, using its 24.576Mhz oscillator and power supply.
Having used the DEQX PDC ADC input (which employs a AK5393VS ADC chip) with the RIAA Pre line out so far, I cannot see major issues,, will compare the input sensitivities and headroom, though, and take care of these.