RoyDaniels
New Head-Fier
That's one way to get rid of the problemThe Blon is higher impedance and lower sensitivity so it will be less reactive , a hum in both channels like that is much more "normal" and I think the computer power supply is the culprit
Cables have a tendency to behave like antennas but it is hard to predict and they are rarely shielded
Best of luck anyway , I had a car once with a noise problem I sold it
