The general English name of international difference from the original upright piano and original grand piano, generally only 3: 1.Electronic piano, 2. Digital piano, 3. Hybrid piano

About Hybird piano, It's easy for the average person to understand. The keyboard part of this piano is copied or improved physical and mechanical structure of the original piano. But there are no strings, and the pronunciation part is read and processed by a built-in timbre chip. The confusing thing is Electronic piano and Digital piano. Many people confuse them and equate them completely.

Specific sense of hearing, the electric piano combines the characteristics of acoustic instrument and electric sounding instrument. Also similar to electric guitar or bass. If it is those who do not add exaggerated distortion, phase shift, wow, rotating speakers and other effects, a little bit more orthodox electric piano, actually listen carefully, there are more or less can find a lot of acoustic instrument timbre characteristics, feelings, verve and shadow.

What people today call electric pianos are actually digital pianos.

As for Hybrid piano, the electronic keyboard instrument continues to evolve toward the acoustic grand piano. Not only the timbre is more authentic and detailed, the keyboard and string machine are copied or improved, which almost completely reproduces the luxurious performance experience of the original grand piano.

It should be said that these are three stages of the evolution of  piano to imitate and replace the acoustic piano. The emergence of digital piano can be regarded as the imitation and replacement of acoustic piano.