So long as you're not charging with the LEDs flashing the sound won't cut out randomly.
I also found that the in-line 3.5mm was soldered poorly. I haven't oppened it up but it just won't connect to my xbox controller. So i have a spare headset if i want to talk on xbox live.
Other than that the sound is great and I'm not sure the purpose of the LEDs but they're cool when it's on a stand.
Realistically it's a freat headset i just need a replacment 3.5mm lead.