Dear @solipsa : The AD-50 is not an stand alone unit it’s an Accuphase phono stgae input board and comes with 66 db of gain that’s more than enough for the ART 9XA.
As a fact Accuphase spec about says a sensitivity of 0.126mV .
It works with the OP E-480 and in this picture at the left side of the unit you can see two blanks spaces where the AD-50 goes:
http://www.accuphase.com/model/photo/e-480_e_back.jpg
Accuphase from the vintage times always been and be top class electronic designs and very high quality excecution of those designs to compete with top SS great manufacturer names.
R.
As a fact Accuphase spec about says a sensitivity of 0.126mV .
It works with the OP E-480 and in this picture at the left side of the unit you can see two blanks spaces where the AD-50 goes:
http://www.accuphase.com/model/photo/e-480_e_back.jpg
Accuphase from the vintage times always been and be top class electronic designs and very high quality excecution of those designs to compete with top SS great manufacturer names.
R.