I have changed to 3 different routers in the span of me owning this headset, all of which have been 2.4GHz and one has been dual band. no issues what so ever. My adapter was also close to the router (less than 5 feet away from it).
If I can remember the names I think they were:
Now some Arris TG860 model (bundle with xfinity for Highspeed and phone service)
I'll chime in with another note about dropping sound. I have a D-Link DIR-655 wireless router. Sound drops for about 3-5 seconds every 15 minutes.