Hi, A year ago I purchased a ESP LTD D-5. Nice bass I have to say. Anyways, about 6 months ago, I started to notice a disturbing humming/buzzing (really still don't know the difference between these two "different" phenomena) at a relative high freq. To deal with it I have to reduce the bass treble tone (which is frankly not my favorite set up). I have been researching around this issue in the web. Well to expedite, last night I checked the ground (according to the Seymour Duncan procedure) path. No issues found. Well, I would appreciate any help on this matter, such as: Any other test I could run? Any known issues with this bass mode/electronics (I know he runs on two proprietary ESP HB and a G & B 3B Equalizer) Regards!