This is a very commonly asked question and it is important to take great notice of its answer. A digital piano does not replace an acoustic piano – these are in fact two separate instruments, as is a guitar and a violin.
A real piano has metal strings which vibrate when struck by the hammer – the sound produced is amplified by the real wood soundboard which ‘transports’ the sound waves across the ‘board’ creating a full embodied tone. This is different from a digital piano which is reliant on speakers and electronic amplifiers to produce ‘sound’ which compared to a real piano is non-resonant and severely lacks proper sustain.
A real piano also has ‘hammers’ which strike the strings causing them to vibrate as mentioned above – due to this movement a real piano has a very unique, definite touch which cannot be replicated in a digital piano as these do not have hammers that move and contact strings etc.
VERDICT: always buy a real (acoustic piano) over a digital piano. The myth that a digital piano is more compact than a real acoustic piano is not true – if a digital piano has the full size keyboard then it will be the same size as a real piano anyway! A real piano will always be a safer investment as digital pianos are superseded with new models all the time (note the length of time that manufacturers put on digital pianos is much shorter than on their real pianos). Most importantly the overall playing experience is vastly different, so if you are looking to learn the piano then it is imperative you purchase a real piano because of the reasons outlined above.
Downloading our free Piano Buyers Guide will provide more detailed information about this.