What is the inductance

Hello, All at a frequency of 48 kHz???? There should be no influence of the reflected wave there. If only there were megahertz... I looked at the diagram there three channels are mixed on resistances, so if there is a capacitance or inductance, then it is in the AY resistor itself or in the sound box on which it was digitalized. One last option seems unlikely to me - well, it can’t be that the manufacturer has released such a harmful product - which can normally record in this mode and at the same time produce such terrible interference. Only AY (I actually have YM) can blame. REQUEST. Does anyone have the opportunity to take similar measurements and post them? samples!