A processor is considered digital and I would simply keep it away from tube phono stages and from your power amps.
In the case of an integrated, it is up to the designer to make smart use of shielding, physical orientation, etc., to minimize such effects.
In our case, our integrated will have SS phono and DAC option, not tube. EMI fields also have a specific geometry, depending on the transformer type, size and orientation. Toroids and R-Core types radiate the LEAST field. EI core radiate the most.
Thanks,
Dan