D800, What's in a slave?

[Spindrift]

I've used the Phono section on a slave D440 with a problem.

I would only question if the slave is processing the phono signal or is it just passing it to the master for processing?  Or did you actually separate your units?

Sorry in my post I meant to say "without a problem"

Interesting question though - I'm assuming the slave did the riaa processing and sent the 24/96 pcm signal to the master for left channel amplification but I don't know for sure - never tried it as a 220 slave on its own . .