Originally Posted by dfkt
I just plugged the HJE900 into my girlfriend's Acer laptop, equipped with a Realtek HD sound card. Absolutely no hiss whatsoever, at any volume level... (As with any laptop, I cut the green/yellow ground line from the AC power adapter cable, to prevent any ground-loop/hum/hiss. YMMV.)
Well for whatever reason it just stopped hissing on my phone. Sounds nice and quiet, almost as quiet as the clip+. I still hear it on the laptop a little, but it has definitely quieted down a lot too. Is this a possible break in issue? I had about 10-15 hours on them when I posted. Seriously, I have not done anything different and was looking at cutting the ground line on the power adapter.