Yamaha PSRE253 KIT Portable Keyboard with Accessory Kit and X Stand Includes a Survival Kit B2 and X Stand! Practice at individual levels with the Yamaha Education Suite lesson functions Extend and enhance the keyboard experience by connecting to an iPhone, iPad, or iPod (requires optional i-UX1 cable) Optimize the overall sound with different EQ settings on the instrument Tailor the overall output for optimal sound in different listening situations