A first of its kind from Urbanears, Slussen is the most powerful after-party weapon known to man. Slussen is the combination of pocket-sized hardware and free software that allows you to take the party with you, wherever you go. To unleash Slussen, plug the adapter into your iPhone®, iPod® or other iOS device. Connect your headphones and sound system into the adapter via the two 3.5mm jacks. Launch the app, and that’s it. With its pre-listening feature, you can ensure that the tunes are always bumping, even while preparing your next track. So you can blow the party up instead of out.