I have the same question. I've been looking through various threads, and am still not sure. I read that the pro II is the name for the old version, and the bass edition is called just that: "bass edition"
I am looking on Taobao and they don't seem to specify. They are also white, are these legit?
Can anyone explain, and post a link that would show which is the bass edition.
Another note, I think I'm seeing GR01 for under $20, can that be right?