There's a bar we play at which has a street signal light setup in the corner of the stage area. It blinks red, yellow, and green intermittently. When the yellow light blinks, there's a strange buzz that emits from my amp. Sounds kinda like a loud bug zapper.
That was the only time it occurred until Saturday. We were at a different place and my amp started buzzing constantly. The buzz is louder on distorted channels than the clean channel.
It doesn't happen at home, so I'm wondering if it has something to do with blinking stage lights? Anyone else have this experience?
Power conditioner should sort that out.