If an amateur radio transmission is heard in a device that contains no RF components, what type of interference is this?

If a device like a stereo amplifier, PA system, or electronic organ picks up a radio signal despite having no radio frequency (RF) tuner, it is experiencing audio rectification. The speaker wires or interconnect cables act as impromptu antennas, bringing the strong RF signal into the device. Once inside, non-linear electronic components like diodes or transistors act as unintended AM detectors, stripping the envelope from the RF signal and amplifying it through the speakers. Options like intermodulation or front-end overload apply only to devices designed to receive RF signals, such as radios or TVs.