Be careful. See I know what these FX40s are. They are great. perhaps a little too great. So great after you get your taste of what the carbon nanotube drivers do for your music. Then all of a sudden you get curious about the higher end carbon nanotube earphones. And even the headphone they threw in a big old 40mm driver for. These are the gateway. Be warned. Just say it now. Say it with me.
"I FHSWarrior will not be curious about a higher end more refined version of the FX40. I FHWarrior will not be interested any other JVC made product." If you said this. Then only then you can just enjoy the FX40s. Nothing more.
Lol. Burn in is absolutely important on these. The more burn in the better. Remember Carbon, base material for diamonds. Stiffer than any dynamic in earphone land. A funny story. One of the guys on the HA-S500 thread was burning in his headphones and his mom for some reason ended up blasting his volume to something like 190% of max volume distorting the sound at that level. He went into his room to find the music absolutely Maxed out. He was flipping mad obviously thinking his mum ruined his new headphones.. It turned out this probably just loosened it a bit but no damage whatsoever. True story. I think normal phones and it would have done some damage. Carbon nanotubes. Seems they can take some punishment.