To the customer who wrote: "The volume using the headset is less than 40% of what the phone microphone does by itself." You may want to try turning up the volume other than using the dial. Look on the other side of the control where the icon of the microphones are and you will see a slit where you can put a pen tip in and slide the slider over to the right or left. This will increase the volume greatly. This is in the instructions that came with the headset. I do agree it is not the easiest thing to put on quickly. Sound quality on both ends is pretty good.Gave the "4-star" score because it is not that easy to put on quickly. . .at least the first few times I've done it. Maybe I will get used to it later.