The input impedance of a transducer when its output is connected to a load of infinite impedance.
"I have just auditioned my new CD Transfer disks. I am impressed with this upgraded playback system. The improved resolution the B&O Playback provides is striking. It is worthy of note that the absence of System Transcription Distortion invariably reveals any presence of distortion within the source media itself. At first I was disconcerted to ..."