My power supply lead is starting to fray where it plugs into the receiver unit. I have purchased 2 different replacement power supplies, from different suppliers and both have said they are suitable for the G30. However, when I connect them, both produce an oscillating sound that gets louder as I turn my amp (Ashdown bass combo) up. I get no such problem with the original power supply, which does still work. One has a 2amp out put and the other, 500mA. Is there such thing as an 'approved' Line 6 power supply?
