I've played this model. Decent sounding board overall. Good features for the budding player. Casio did drop some things that appealed to more seasoned players though. As with many low end boards now (as Ian also pointed out) there's a lack of standard midi jacks and it's just USB. All around though it's not a bad board to just have laying around.

Gotta disagree with Fran though..., although Yamaha's not my top choice in arrangers I'd def take the PSR-3000 over this. Even if the key feel is better on the Casio.., the 3000 gives you so much more that's it's not even fair to list the differences.
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.