I have had my sr80i's for close to a year now, coming up within about a week or two. However, when there are low bass notes, I hear some vibration from the drivers. This only occurs at volume levels that I don't often listen to or on odd combinations of bass, but I do notice it occasionally. The question is, this is a problem with the headphones, they are still in warranty, is it worth it to RMA? I plan to upgrade relatively soon, so I don't think it matters, but if I have the warranty, and this potentially affects me, then why would I not have them fixed? What do you guys think?