They use 2.5 - tried plugging in my Sennheisers (both of them) but the plugs are too big. Those earphones don't look too great either - seem like a cheapo set of earphones u can buy from ebay for 5 bucks that will end up breaking on you after a month and sound like ass. Think i'll just go buy a 3.5 to 2.5 adapter for my Sennheisers. Might get some Bose ones soon too.
19/11/2007
Melbourne, Victoria