Help with Marantz NR1510

Trying to help a friend with New AV unit.  He ran his rega TT strait in to the phono stage fine.  Then he wanted to compare that to the external phono stage he has.  I told him to go into the audio in assignable 1 , 2 or 3 but when he tried that no sound.  Does he have to activate those inputs in the "audio in" section of the NR1510?


Yeah thats what we did.  tried the assignable analog in section. Figured it has to be a setting in the configuration. 

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