Slussen is a pocket-sized adapter that lets you pull out your DJ skills wherever you go. Use it with the app to adjust the equalizer and pre-listen to tracks. Just plug your iOS device into the adapter, connect your headphones and speaker via the two 3.5mm jacks, and launch the app.
* Note - this is not a headphone splitter. One jack is for headphones and the other is for speakers. This item is for use with the Urbanears app, available for download in the App Store *