Input Impedance of Chenin Linestage - Anyone Know?

I am looking for the input impedance of the Supratek Chenin linestage, using the CD and AUX inputs. I am interested in matching the Chenin with some sources and need to know those values - any help is appreciated.
I emailed Mick from Supratek and he kindly responded even though Supratek is no longer. His reply:

100K input impedance with the manual volume control
50K input impedance with the remote volume control

Both values are for the Chenin linestage.