Digital Spinet Piano-factory

Traditional Type: Traditional digital pianos are designed to resemble the console of an electronic organ or a spinet harpsichord but usually having a stand rather than fully enclosed lower section. Some models are based on the casework of traditional upright pianos with a fully enclosed bottom part and metallic weighted sustain and soft pedals that resemble traditional piano pedals.
Traditional digital pianos, due to their form, offer less portability than the other types, and are mainly designed for use in a single place (e.g. home, classrooms or studios), and are not intended for mobility such as on stage or for live performance.

Upright Type: These are a sub-type of traditional digital pianos that offer a more classical design which closely resemble an acoustic upright piano. The most expensive models may appear similar in their outer appearance and height to a full-size upright piano. Upright digital pianos are mainly intended for home use and are usually more expensive than the other types, due to the expensive wooden case. Some models, especially the higher-end, more expensive ones, often use wooden keyboards, as opposed to regular plastic keyboards.

Grand Type: An uncommon form of digital piano that resembles a grand piano, usually with a more precision keyboard action and high-quality sound system built into the unit's cabinet in a similar manner as the strings on a grand piano. These pianos are mostly high-end novelty models offered by only small number of manufacturers, and often have higher prices than an average acoustic piano.

Stage Piano: Another common form is the stage piano, designed for use with live performances, professional audio, or in a recording studio. This type of digital piano normally makes no attempt to imitate the physical appearance of an acoustic piano, rather resembling a generic synthesizer or music workstation. A distinguishing feature of most stage pianos is a lack of internal loudspeakers and amplification - it is normally assumed that a powerful keyboard amplifier or PA system will be used. However, some stage pianos are equipped with powered speakers.

Portable Type: Yet another form is the portable digital piano which often combines the capabilities of stage pianos, but with additional features similar to a conventional home keyboard. These digital pianos are mostly designed for various purposes such as home, studio, classroom, stage or personal use. It is similar in form to a stage piano, but much lighter in weight, and having a more compact size. Unlike stage pianos, portable digital pianos were commonly equipped with built-in amplification and loudspeakers, usually has lower cost than other types, and its sound quality was often comparable or similar to that of a conventional keyboards due to a simpler sound synthesis system.
Most portable digital pianos could be freely fitted in a regular keyboard stand like a stage piano, while some types also come equipped with a dedicated matching stand which, when assembled, will have a slight resemblance to a console digital piano.

Hybrid Type: Hybrids are a type of high-performance digital piano that incorporate actual piano action and high-quality modeled samples of an acoustic piano.

Piano Module: There are also digital piano modules, which are simply keyboardless sound modules chiefly containing piano samples. To use these modules, they are typically connected to a MIDI controller keyboard, and the output signal from the module is plugged into a keyboard amplifier or PA system.