Nexus 4 Owners - Are you 100% sure you don't have any "buzzing" or noises from the earpiece?

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http://forums.androidcentral.com – So like many, my n4 has noises coming from the earpiece, even when not making calls. The "crackling" noise or "buzzing" gets more and more obvious as call volume is increased. I asked Google for a replacement, but I am seeing some people get replacements that have the same problem. I'm not sure if I should keep my current phone or ask for another one if the replacement has the same thing. It's really not that bad, but I'd obviously rather have one that doesn't have it. I really want to see if more people have it and just don't realize, or if many people just actually d (HowTos)