I can only speak on my personal experience with the jtv-69, as you will find a wide range of answers. For me, with 1.9 and prior, the model string volume at default 100% was too high - caused clipping and did not match the mags. I tuned string volume down to 60% or so and was better. With 2.0, the string volume is on par with the mags right out of the box. No clipping this time. So, I think they did tweak the volumes with 2.0, but in a good way and more balanced.