With built-in speakers featuring the Ultra-Wide Stereo DSP button for greater separation and a more spacious sound, the new PSR-E233 and PSR-E333 have great features at affordable prices. Features include Yamaha Education Suite built-in lessons, a new power saving mode and 61 full-sized keys. Play along with a band using any of the 100-plus built-in accompaniment styles or use the dedicated Portable Grand Button to instantly call up a great-sounding grand piano. The PSR-E333 adds a USB to HOST connector for computer compatibility, touch sensitive keys for expressive, piano-style playing and a more powerful speaker system for a fuller sound.