It is amazing to see how the bass response has changed so far. But this change may not satisfy everyone since some are looking for more bass response in v2 while others wants it to stay as it was. Anyway, bass has lost a bit (actually more than a bit) of fullness and extension yet still controlled, detailed and now more balanced & smooth I would say.
At first they were tight and the bass was muffled. I let them burn in for 24 hours now and they really have opened up. The bass is excellent and I can hear more detail in my music versus the klipsch s4 and cx 500's.
23 more hours until I reach the recommended 150. Although to be honest, I'm pretty satisfied with how they sound already. So I'm not sure how much improvement can be made with another day's worth of burn-in. We'll see.