the casio wk-3800 has 76 full size keys with 400 dsp programmed advanced tones like stereo piano and tremolo electric piano for a total of 620 tones including 50 drawbar organ tones.  features an on-board sequencer and mixer plus powerful 2-way bass reflex speakers.  this keyboard is ideal for home/project studio us, open-mic performance, education/classroom applications, or simply for pure musical enjoyment.  computer connectable via usb and also includes an sd card slot and floppy drive.  d-12 ac adaptor included.