stmike
I do have a slight hum as a result of the ground plugs on the ac cords, so will probably attach 3 prong to 2 prong adapters ...The ground plugs aren't the cause of your hum - it's the different voltage potential between the neutral and the ground that causes the hum. Eliminating the safety ground treats the symptom of your problem - not the cause - and is potentially hazardous.