The relevance of distortion to achieving realistic sound

[Phelonious Ponk]

Yes, but are the speakers plugged into the mains on the same spur/power board as the receiver. I'm talking about noise generated by the receiver's supply going down the mains cord to the house supply and then back up to the active's power supply. It even could be happening via RFI, through the air, from the receiver supply to the AVi. It may seem unlikely to you, but it could be worth trying ...

Frank

The receiver and AVis are only powered up at the same time if by accident (as in I forgot to turn off the receiver). And they are plugged into separate circuits.

Tim