Inserting the cable also turns off the power from the internal battery, so it disables the other controls on the headset so you cant adjust the volume. Have bought Aerosoles for years because they are comfortable and have classic design. But, based on my experience, this mattress pad did not keep the urine from leaking through onto the new mattress (which now has a urine stain/smell). Indicating the L ear piece had been touched. Needless to say I was severely disappointed when I discovered my headphones to be broken. 4 mm 5-pole balanced jack. My boyfriend got a pair of Bose QuietComfort 20s and I love them but after an hour of wearing them, my ears were killing me. one is that they are incredibly comfortable to wear for long periods of time and the other is that they filter almost no outside noise in passive mode. I plan to buy another pair soon. com, while I paid a lot less than that.