I also had problems with the "tin" sound with incoming audio. I also wish the volume was louder. It's ok in the office, but in the car, I could use some volume control. Weird thing about the volume was the adjusting. When I adjusted the volume on the headset, the "beep" notification it gives, increased in volume to a satisfactory level (almost to loud at the 6th level), but the volume of the caller never increased. Odd?

I love everything about this headset except the headset earpiece volume. My clients love everything about this phone as a great number of them commented on the clarity and lack of background noise.

I have returned the headset to Cingular and am waiting for a replacement (as they only had the 1 I bought in stock) to give it another shot. Hopefully it was that headset and the replacement will work properly. I have used about every BT headset out there and would like to stop looking (for a while anyway). (I use a 8703e and Q by the way).