NEW!  The PSR-E423 offers several innovative features. The basic features for learning to play like the Yamaha Portable Grand and Yamaha Education Suite and features for when it's time to perform, like synthesizer Control Knobs for real-time control of filter, effects, sound envelope and Style tempo. The Arpeggiator provides an expanded 150 different patterns and 40 arpeggio Voices. These easy-to-use professional features, along with its new black body, set this keyboard apart from others in its class. It also features 4 times more flash memory than the model it replaces so you can play along with your favorites transferred from a PC!  Amazing value. R$499