Amphony H2500 Wireless Headphones

I like the thoughtful design of these phones.  The base station keeps two spare batteries charged, so there's no recharge down time.  Phones are comfortable, sound good.  But the range is very poor, typically about 10 feet in my case.  The problem is that many other devices (802.11n, cordless phones) use the 5.8 GHz band and they interfere with these headphones.  The Amphony design doesn't use normal 802.11x protocol.  If it did, there wouldn't be any interference problem, because this protocol automatically deconflicts contending devices.  So if you have any 5.8 GHz devices around, you will not like these phones.