Whether playing in a band, recording in a studio, or merely playing music as a hobby at home, knowing what instrument you want to purchase is important. Knowing the differences between digital pianos and keyboards can help in making an informed decision on what is the right instrument for you.
Digital Piano
A digital piano is an instrument that is based on an acoustic piano. It is physically smaller than a piano and in most cases is a cheaper alternative to a new acoustic piano.
Keyboard Design
Stylistically based upon the piano, keyboards vary in size and quality. Mostly of a more compact design, keyboards range from cheap introductory level instruments to high-end professional instruments.
Sounds
Digital pianos have sounds that are derivative of an acoustic piano, recreating the timbre of instruments such as a Wurlitzer or Fender-Rhodes. Keyboards have a wider range of synthesized sounds including guitar, percussion, and orchestral instruments.
Playability
One of the main differences between a digital piano and a keyboard is the feel and the playability. Digital pianos have weighted keys to replicate the feel of an acoustic piano, whereas most keyboards will eschew this feature, instead choosing non-weighted keys as a standard.
Other Differences to Consider
Most digital pianos are designed to be used in exactly the same way as traditional acoustic pianos and do not need any extra amplification. Budget keyboards that are priced for home use also work this way, however, the more professional keyboards that are designed for studio and live work need amplification to produce sounds.