Here are some features of the Yamaha MOX6: 
61 semi-weighted keys
1,217 voices
256 performances
Over 1,200 voices, including sounds like grand piano and the YC-3B Organ emulator
Performance mode, which combines up to four voices to an inter performance
Song mode, which gives you up to sixteen multi timbrel slots
USB computer integration
The MOX6 is designed to serve as the heart of a compact audio/MIDI music production system. It has no onboard sampling or audio recording facilities of its own