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If you are still plugging it into the wall brick regardless of whether you are going directly to the wall AC or power strip - it probably is the wall brick. How do I know? I had the same exact problem (buzzing) with a electronic keyer feeding back into my headset. The moment I changed the power supply (9 volt) adapter (changed it for a better one) - the noise went away. So, do you have another 9 volt source you can test out?

[QUOTE="KE3W, post: 267806, member: 17753"] If you are still plugging it into the [I][B]wall brick[/B][/I] regardless of whether you are going directly to the wall AC or power strip - it probably is the [I][B]wall brick[/B][/I]. How do I know? I had the same exact problem (buzzing) with a electronic keyer feeding back into my headset. The moment I changed the power supply (9 volt) adapter (changed it for a better one) - the noise went away. So, do you have another 9 volt source you can test out? [/QUOTE]

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