2.1 very satisfied with this kit very contained price. The satellites are much heavier than it looks and deliver clear and powerful sound, in addition to having a nice design. The box does its job and can send many (too) low. The remote control cable is long practice. An amazing thing (or so it is a choice of the manufacturer): When I plug my headphones into the remote control (Sennheiser HD415), I have to turn up the sound almost fully (PC + remote control). Be careful when disconnection of the helmet!
Only downside: the packaging was damaged arriving well (fortunately without damage inside) and I also felt that the kit was unwrapped (poorly coiled wire, protection film torn), costing a star.