Philb7777, phono cartridges are a balanced source. Unless you have an air bearing arm, connecting the tone arm to a phono stage with a balanced input is a matter of the interconnect cable and not anything else.
The balanced phono connection we developed is now in use industry wide. With the DIN connection it is pretty straight forward- pin 3 of the DIN is the shield for the left and right channels and connects to pin 1 of the XLR input. There is no need for a separate ground wire.
If the arm you are using has RCA outputs like you see on the Well-Tempered and a few others (that are **not** air-bearing straight-trackers), then it is still possible to connect to the RCAs and go to the XLR inputs and still keep everything balanced as long as there is a separate ground post at the tone arm output. The technique is described in our MP-1 or MP-3 owner's manual, which is a free pdf download at
http://www.atma-sphere.com/support/index.html
The balanced phono connection we developed is now in use industry wide. With the DIN connection it is pretty straight forward- pin 3 of the DIN is the shield for the left and right channels and connects to pin 1 of the XLR input. There is no need for a separate ground wire.
If the arm you are using has RCA outputs like you see on the Well-Tempered and a few others (that are **not** air-bearing straight-trackers), then it is still possible to connect to the RCAs and go to the XLR inputs and still keep everything balanced as long as there is a separate ground post at the tone arm output. The technique is described in our MP-1 or MP-3 owner's manual, which is a free pdf download at
http://www.atma-sphere.com/support/index.html