That's an interesting question. Any flow of electrons has an associated magnetic field. Any magnetic field will have an effect on the flow of electrons in it's vicinity. That's how transformers work and how magnets can affect a picture tube.
So the short answer is yes, all of these fields and flowing electrons interact. Is it audible? It depends on the strength of the signal being affected compared to the orientation and the strength of the magnetic fields trying to affect it.
Put a phono stage dealing with very small signals next to a big power amplifier with large transformers and it is very easy to hear the humming that results because the large fields from the amp transformers induce currents in the phono stage, but the phono stage will have a much smaller effect on the amp.
It is directly proportional to the strength of the field, the distance betwen the devices, and how they are oriented.
So the short answer is yes, all of these fields and flowing electrons interact. Is it audible? It depends on the strength of the signal being affected compared to the orientation and the strength of the magnetic fields trying to affect it.
Put a phono stage dealing with very small signals next to a big power amplifier with large transformers and it is very easy to hear the humming that results because the large fields from the amp transformers induce currents in the phono stage, but the phono stage will have a much smaller effect on the amp.
It is directly proportional to the strength of the field, the distance betwen the devices, and how they are oriented.