

The best thing about an acoustic piano is its sound. Maintaining perfect pitch on an acoustic requires tune-ups now and then. Without them, your piano will be out of tune. The music just doesn't sound right. There's no pleasure in playing a piano that's out of tune.
The best thing about a digital piano is that it never goes out of tune. It's always in perfect pitch. Since it's not string-based, there are no strings that grow loose and need to be tightened. The sound is produced by digital waveforms. Digital piano technology has developed to such a degree that digital pianos can reproduce stereo piano and grand piano sounds so accurately that you get clear, rich acoustic sound each time you press the keys!
Some of the best digital pianos on the market today are manufactured by Yamaha and Casio. Two of Yamaha's finest offerings are the Yamaha P85 and the Yamaha Arius YDP160.
The Yamaha P85 Digital Stage Piano, stylish in black and silver models, has 88 weighted hammer keys that capture the natural feel of a real acoustic beneath your fingertips. Advanced Wave Memory sample sounds recreate authentic-sounding notes in the lovely tones and natural reverberation of acoustic models. The best way to appreciate this beautiful keyboard is to hear it played, so check out this Youtube video. Put on your headphones, close your eyes...and just listen.
The Yamaha Arius YDP160 is one of Yamaha's most beautiful specimens. The extraordinary Yamaha sound quality and other exciting features are encased in an attractive wooden housing in dark rosewood finish. When you enter a room, it's the first thing that will draw your eye. Good looks notwithstanding, the best thing about the Yamaha Arius is still its sound. Dynamic Stereo Sampling of 3 multiple stereo recordings of an actual grand piano provide subtle differences in volume and timbre. Just like its acoustic counterparts, it has 3 polished gold pedals. The damper pedal can create an authentic half-damper effect, allowing you to express and control all the nuances of feeling whenever you run your fingers over the keys.
The Casio equivalent of the Yamaha Arius is the Casio PX800 Privia. This model is the most advanced digital piano in its acclaimed Privia series. The PX800 Privia takes digital piano sound to its highest level with its innovative Acoustic and Intelligent Filter (AIF) System, dramatic DSP reverb effects, and incredible 128-note polyphony. AIF technology provides realistically natural sound and soft transitions from one note to another. First-class DSP effects produce concert-level reverberations. The 128-note polyphony makes it possible to play difficult chords with ease. In addition, you can create a breathtaking ensemble with the 162 built-In tones through layering or splitting.
And the best thing is, throughout years of use, these amazing digital pianos constantly stay in perfect pitch!