I'm very happy with Panasonic RP-HT21 stereo headphones. Light to wear and loads of volume. If you want the earphones for back packing, I would consider the Panasonic RP-HT45 which I use with my K1. Very similar to the RP-HT21in volume and weight, but this headset folds up to take up less space and also comes with a mini volume control on the leads. Ben Dalfen, 4X1BD