It will be interesting to put the vsd1 against the gr02 be, im guessing it will have similar sound sig. Plus these sound great for drum and bass, dubstep and hiphop, infact there great allrounders. I find them more engaging, and more satisfying overall than listening to my jvc s500's and mh1c. About burning in, I found they needed a fairly short burning in process. Maybe around 10-20 hours to sound really good. Bass is very bloated and boomy out of box but will settle after burn in.
Nah, the gr02be is quite different. It's quite V-shaped in comparison to the VSD1, which is only a touch laid back. Also the gr02be has thinner note presentation to boost the clarity but it makes it a bit cold and dry and slightly grainy. The bass on VSD1 has also better impact as the gr02be's is more on the soft side. As far as the treble - the VSD1's is smooth and fairly well extended, while the gr02be's is a little hot, more pronounced and more aggressive, which I liked but it can definitely be too harsh for some people and more sibilant. The VSD1 sound more natural overall and is a lot more versatile.