Having previously Logitech boxes had X-140, I switched to this pit. And I was very pleasantly surprised. 1. The boxes are much cheaper than the Logitech boxes 2. Excellent shielding of boxes against sources of interference - have for example next to the Box a cordless telephone and 2 mobile phones - no problems! 3. Design very elegant and not as big as the Logitech boxes 4. Really pleasant sound with no annoying hum From me an unconditional recommendation !!