The owners manual for the 7B3 amplifier specifies the input impedance in balanced mode to be + 10 kilo ohms and - 10 kilo ohms. Am I correct to interpret this as a total balanced input impedance of 20 kilo ohms? I ask, because I want to run the 7B3s with an ARC Ref 5 SE preamp, that specifies a minimum load of 20 kilo ohms. Thanks.
