I own a pair of the 630vb and I find them to be really enjoyable. I can’t say I’ve ever seen the 630vb discussed or described anywhere except for when I search for them specifically, but even then the content is minimal. I’ve never met another person that’s owned a pair. I haven’t seen anyone mention them in any threads. The reviews I’ve read have been favorable, but they were written at the time they were released. I’ve had mine listed for awhile and there doesn’t seem to be any interest. I’m curious to hear what a bunch of experts think about them. What do you think of the Sennheiser hd 630VBs? What makes them bad, good, unacknowledged, etc.? Why aren’t they more popular?