FiiO E5 Portable Headphone Amplifier for Skullcandy Skullcrushers Hesh G.I. Lowrider Uprock Stereo ROC NATION Aviator INK'd + BONUS Fiio L9 L-Shaped Line Out Dock (LOD) Cable for iPhone and iPod + ButterflyPhoto Microfiber Cleaning Cloth Get the Best Sound out of your New SkullCandy Headphones using this FiiO E5 Portable Headphone Amplifier The FiiO E5 gives an UNBELIEVABLE boost in Sound Quality &lt;&gt; Metal Casing with Built in Metal Clip &lt;&gt; Rechargable Battery Compatible with Skullcandy Skullcrushers, Hesh, G.I., Lowrider, Uprock, Stereo, ROC NATION, Aviator, INK'd Ultra Slim and Portable &lt;&gt; FiiO L9 Supports standard dock profile on iPod, iPhone, and iPad. Does not support Shuffle. ButterflyPhoto Micro Fiber Cleaning Cloth - Safely Removes Fingerprints and Dust, Cleans Without Chemicals