Casio Privia PX-870 digital pianoIntroducing the Casio PX 870 digital piano The Casio Privia PX 870 marks Casio's biggest update in the top end Privia PX model for a while and is such an improvement over the old PX 860. A more intuitive design with a control panel hidden away on the left cheek block is a nice touch, giving the air of a more 'acoustic piano' experience, while new piano samples and a specially designed speaker system bring a much richer and natural sound quality. The