Looks like region discussion are the order of the day again, been a while since we had this phase. Anyway here goes, i love my bass. I’m not a bass head but love deep, full sounding bass and mids. Before the introduction of any of these firmwares, i was rocking out on my original E region and had to use the bass dials to get to my desired listening taste. Then tunings arrived and everyone jumped onto the bandwagon of tinkering with the walkmans and also changing regions where J was always the most talked abut and most popular region. I switched to J then and fast forward 8 months, never looked back. I have tinkered with almost all the regions and even yesterday I tried CA with FE. Sounded ok but after a while the mid bass hump was gettting too much for me and i went back to J and realised why i stayed on it all this while. So, in summary CA gives you a very artificially hyped up bass that gets too much after long listening. You will notice that the bass gets in the way sooner rather than later. J instead gives you a natural feeling of musicality yet not sacrificing the deep and well refined bass on FE. Try it, it’s only 10 seconds to hear the difference and another 10 seconds to change it back.