hifi engine

SAE 5000A question

I have been told that the SAE 5000A included RIAA eq in it's circuitry. Does anyone know if this is the case? I would think that would bring about "double" eq as the SAE and your receiver/preamp would be applying the curve. I have one of these and have never noticed any gross sound wackiness that I would associate with the two curves interacting. Thanks for any input anyone might have.