^^Name at least one then, sweetheart because the noise you hear buzzing is the ballast being charged up. Some may be quieter than others, but they all make noise. You're not gonna hear them through a rock concert, that's ovious. And you're it's not gonna be very noticable if you and some friends are standing around having a conversation. If you stand at the ballast and have someone turn it on, I assure you whether or not it's OEM or not, you will hear it unless it isn't an HID based system.