First of all, I realised a mistake in my original post which I will edit. My friend just got his LCD-3 but the graph is from the second half of 2013 so it makes it a 2013 model. Also to clarify what I said about differences, I convinced myself I could hear differences but they could have been in my head because I was listening so hard and swapping headphones over and over again. I thought some of the upper mid frequencies seemed slightly more forwards on the 2013 model. But honestly if the difference really did exist it was tiny. I also felt the bass was slightly stronger on the 2013 model, but once again a very tiny difference. Interestingly, where the graphs vary, which is the higher frequencies, I really couldn't detect a difference.