Hey guys, pulled the trigger on these few weeks ago after listening to them at a friends house, i really liked them. After receiving them, i instantly noticed that the earpads are different than the pair my friend owns. The earpads on mine are a bit thinner and have softer and slower rebounding memory foam in them, much more comfortable and doesn't get as hot as the old ones. So i took them with me when i visited my friends place again and compared them to make sure, and they are indeed different. The amount of holes in the back of the pads are still the same. Sound wise, the difference is pretty significant. The bass with the new pads is much less "boomy". Don't get me wrong, it's still strong, but more controlled and not as overwhelming. The mids seem more balanced, the elevation in the lower mids is definitely toned down a bit, and the upper mids come a bit forward now. All in all, a very nice experience, they sound livelier but still remain the relaxing signature with the new pads. I don't know if they did anything in terms of driver tuning, we did not change the pads around unfortunately to test. Before these, i owned a DT 1990, which i liked a lot at first, but after a couple of months, i noticed the fatigue and mild tinnitus at times. Prior to the 1990, i had a TYGR 300R and an Audioquest Nighthawk Carbon. To no surprise, technicality wise (also tuning imo) the T1.3 blows them all out of the water. Beyer also changed up the cable a bit. It's softer and doesn't kink up like the old one. I did not notice the new cable at first, but the key difference is that the 3.5mm jack has "beyerdynamic" printed on the housing now. For reference, the SN of my T1.3 is 105XXX and my friends is 101XXX.