FiiO E6 Portable Headphone Amplifier for Audio-Technica ATH-M50 ATH-ANC7B ATH-M50S ATH-M20 ATH-M30 ATH-M40FS ATH-ANC23 + BONUS Fiio L9 L-Shaped Line Out Dock (LOD) Cable for iPhone and iPod + Butterfly Photo MicroFiber Cleaning Cloth Get the Best Sound out of your New Audio-Technica Headphones using this FiiO E6 Portable Headphone Amplifier The FiiO E6 gives an unbelievable Boost in Sound Quality &lt;&gt; Implements a Removable Clip &lt;&gt; Has 3 builtin EQ functions Providing Personalized Listening Experience! Compatible with Audio-Technica ATH-M50, ATH-ANC7B, ATH-M50S, ATH-M30, ATH-M20, ATH-M40FS, ATH-ANC23 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