In headphones there is no real such this as surround sound for, You have 2 ears. and stereo is 2 channels. thats all the surround sound you can physically have! now if you add a 3rd channel MAYbe for a Low frequency For center. But thats about it. Surround sound speakers. are just in theory 2 channels but spread out around you. REALLY good speakers spread apart really far can give u the effect as 5.1 surround sound.