High-quality instrument-level 1/4 Hi-Z input jack;Includes Lightning and USB cables for iPhone, iPod touch, iPad and Mac;Adustable input gain control for ideal sound quality with any instrument type;High-quality 24-bit A/D conversion for pristine sound;Powered by the iOS device or USB;no need for batteries;Designed for AmpliTube apps but works great with GarageBand and most other top music apps;High;quality instrument;level 1/4 Hi