Avionic Specialist?

[larr 0]

I am tring to use a set, of earbud type ear piece with normal aircraft radios. I have the ear piece speaker at the correct impedience, but the cord has the standard 3mm plug requiring an adapter to the 1/4" jack. I have tried 2 or 3 adaptors from radio shack, but I get static and electric noise in the ear piece. I have a headset that has a 3mm jack to plug in a music source into it. When I use the earbud through this jack it works fine. I would like to wear the earbuds as a stand alone. Any ideas to get rid of the static/electric noise? Should the jack be insolated, or....? Please be very basic, as I am like SGT Shultz..... I know nothing!

Thanks,

larry