Jai heard by the headset player (Sennheiser) when it was connected via USB to my computer and the hum was louder. Then i detached the USB cable, I have inserted the batteries and I have listened to by headphones (Walkman function). The buzz was even stronger and the tape was inaudible. When i turned the reader has become the buzz louder or softer when I walk around the room like an old AM radio. I tried with another helmet (AudioTechnica) with the same result. I think the drive motor is buzzing and the reader is not protected against linterférence radio.
