Yamaha PSR-EW425 76-Key Portable Keyboard Yamaha Portable Keyboards The PSR-EW425 is an excellent gigging instrument, with a 76-key keyboard that more experienced players can make the most of. The PSR-EW425 features a newly developed tone generator that delivers stunning improvements in sound quality as well as high-quality effects such as delays, and as a premium organ sound sampled from the YC series of high-end stage keyboards.820 Voices and Super Articulation Lite VoicesPremium organ sound290 Styles 2 channels/41 types of DSP insertion effectsQuick samplingGroove CreatorLive Control Knobs, Motion Effect functionality, pitch bend wheelMega BoostDirect Category Access buttonsUSB Audio Recording/InterfaceMic input and vocal effectsIndividual L/R outputs12 Watt + 12 Watt powerful speakers