I have a similar q: mine seems to be defective as I'm getting heavy buzzing on the left channel.

Considering I threw away the plastic container, but that I kept all the paperwork (and most of the cardboard) and it's been < 30 days, will I have better luck exchanging it via Amazon, or RMAing it?

EDIT: crap, I bought it from another online merchant. Anyway, for the general case, if I bought it online, and it's defective, is return/replace via the merchant a better way to go than RMA?

-brendan